CN111812870A - Display panel and display device - Google Patents

Abstract

The invention discloses a display panel and a display device, the display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate, the display panel is provided with a first visual angle display area and a second visual angle display area, the first visual angle display area comprises first visual angle display pixels, the second visual angle display area comprises second visual angle display pixels, the color film substrate is provided with a common electrode, the array substrate is provided with a first pixel electrode and a second pixel electrode which are matched with the common electrode, the first pixel electrode corresponds to the first visual angle display pixels, the second pixel electrode corresponds to the second visual angle display pixels, the liquid crystal layer comprises a first liquid crystal layer corresponding to the first visual angle display area and a second liquid crystal layer corresponding to the second visual angle display area, the alignment direction of the first liquid crystal layer close to one side of the color film substrate is vertical to the alignment direction of the array substrate close to one side of the array substrate, the alignment direction of the second liquid crystal layer close to one side of the color film substrate is parallel to the alignment direction of the second liquid crystal layer close to one side of the array substrate.

Description

Display panel and display device

Technical Field

The present invention relates to the field of liquid crystal display technologies, and in particular, to a display panel and a display device.

Background

With the development of display technology, people can make life more convenient with the help of displays, and Flat Panel Displays (FPDs) are becoming the mainstream of the present, and among them, Liquid Crystal Displays (LCDs) are most popular for their light and thin characteristics. However, in order to allow the user to view different display images when viewing the display from different angles, for example, in the vehicle-mounted display system, when the driver is driving, the driver should be prevented from viewing the display contents irrelevant to driving, and the co-driver can normally view the display contents to prevent the driving safety from being affected, so that a multi-view liquid crystal display is developed.

Generally, the multi-view liquid crystal display can be achieved by grating (barrier) shading, lenticular (prism) refraction, or prism (prism) refraction. The grating shading mode is that the grating is arranged outside the upper polarizing plate, and the transmission direction of the backlight source is controlled by the layer of grating. The cylindrical mirror refraction mode or prism refraction mode is that a cylindrical mirror or a prism is configured in the backlight module, and the cylindrical mirror or the prism is used for controlling the transmission direction of the backlight source. However, the above method of realizing light splitting by using the film layer structure has the disadvantages of difficult manufacturing, high cost, difficult control of light splitting effect and low feasibility.

Disclosure of Invention

In order to overcome the disadvantages and shortcomings of the prior art, an object of the present invention is to provide a display panel and a display device, so as to solve the problems of difficulty in manufacturing a multi-view liquid crystal display and high cost in the prior art.

The purpose of the invention is realized by the following technical scheme:

the invention provides a display panel, which comprises a color film substrate, an array substrate arranged opposite to the color film substrate and a liquid crystal layer positioned between the color film substrate and the array substrate, wherein the display panel comprises a first visual angle display area for displaying a normal visual angle picture and a second visual angle display area for displaying an oblique visual angle picture, the first visual angle display area comprises a plurality of first visual angle display pixels, the second visual angle display area comprises a plurality of second visual angle display pixels, a common electrode is arranged on the color film substrate, the array substrate is provided with a first pixel electrode and a second pixel electrode which are matched with the common electrode, the first pixel electrode corresponds to the first visual angle display pixels, the second pixel electrode corresponds to the second visual angle display pixels, the liquid crystal layer comprises a first liquid crystal layer corresponding to the first visual angle display area and a second liquid crystal layer corresponding to the second visual angle display area, the alignment direction of the first liquid crystal layer close to one side of the color film substrate is vertical to the alignment direction of the first liquid crystal layer close to one side of the array substrate, and the alignment direction of the second liquid crystal layer close to one side of the color film substrate is parallel to the alignment direction of the second liquid crystal layer close to one side of the array substrate.

Furthermore, the array substrate is defined by a plurality of scanning lines, a plurality of first data lines and a plurality of second data lines in an insulated and crossed manner on one side facing the liquid crystal layer to form a plurality of pixel units, the pixel units correspond to the first visual angle display pixels and the pixel units correspond to the second visual angle display pixels one by one, a thin film transistor is arranged in each pixel unit, the first pixel electrode is electrically connected with the scanning lines and the first data lines which are adjacent to the thin film transistors through the thin film transistors, and the second pixel electrode is electrically connected with the scanning lines and the second data lines which are adjacent to the thin film transistors through the thin film transistors.

Furthermore, the first viewing angle display area is long strip and corresponds to three rows of the pixel units, the second viewing angle display area is long strip and corresponds to one row of the pixel units, and the first viewing angle display area and the second viewing angle display area are alternately distributed.

Furthermore, the first viewing angle display area is strip-shaped and corresponds to a row of the pixel units, the second viewing angle display area is strip-shaped and corresponds to a row of the pixel units, and the first viewing angle display area and the second viewing angle display area are alternately distributed.

Further, a colored resist layer is arranged in a region of the color film substrate corresponding to the first viewing angle display pixels, and a region of the color film substrate corresponding to the second viewing angle display pixels is in a transparent state, or colored resist layers are arranged in regions of the color film substrate corresponding to the first viewing angle display pixels and the second viewing angle display pixels.

Furthermore, the array substrate is also provided with a third pixel electrode matched with the second pixel electrode, the third pixel electrode corresponds to the second visual angle display pixel, the third pixel electrode is electrically connected with the scanning line and the first data line which are adjacent to the thin film transistor through the thin film transistor, and the second pixel electrode and the third pixel electrode are positioned on different layers and are insulated and isolated.

Furthermore, the second pixel electrode is located below the third pixel electrode, the second pixel electrode is a block electrode, and the third pixel electrode is a comb-shaped electrode with a slit.

Furthermore, the common electrode is a planar electrode entirely covering the color filter substrate, and the first pixel electrode is a block electrode.

Furthermore, an upper polarizer is arranged on the color film substrate, a lower polarizer is arranged on the array substrate, a transmission axis of the upper polarizer is parallel to the alignment direction of the first liquid crystal layer near one side of the color film substrate, and a transmission axis of the lower polarizer is parallel to the alignment direction of the first liquid crystal layer near one side of the array substrate.

The invention also provides a display device comprising the display panel.

The invention has the beneficial effects that: the display panel comprises a first visual angle display area for displaying a normal visual angle picture and a second visual angle display area for displaying an oblique visual angle picture, wherein the first visual angle display area comprises a plurality of first visual angle display pixels, the second visual angle display area comprises a plurality of second visual angle display pixels, the display panel comprises a color film substrate, an array substrate arranged opposite to the color film substrate and a liquid crystal layer positioned between the color film substrate and the array substrate, the color film substrate is provided with a common electrode, the array substrate is provided with a first pixel electrode and a second pixel electrode which are matched with the common electrode, the first pixel electrode corresponds to the first visual angle display pixels, the second pixel electrode corresponds to the second visual angle display pixels, the liquid crystal layer comprises a first liquid crystal layer corresponding to the first visual angle display area and a second liquid crystal layer corresponding to the second visual angle display area, the direction of the first liquid crystal layer close to one side of the array substrate is vertical to the alignment direction of the array substrate close to one side of the array substrate, the alignment direction of the second liquid crystal layer close to one side of the color film substrate is parallel to the alignment direction of the second liquid crystal layer close to one side of the array substrate. The first visual angle display area adopts a TN display mode, a narrow visual angle of the TN display mode is used for displaying a front visual angle picture, liquid crystal molecules in the second liquid crystal layer are driven to incline through the second pixel electrode in the second visual angle display area, and the second visual angle display area is used for displaying an oblique visual angle picture, so that the display panel can display different pictures at different visual angles simultaneously.

Drawings

Fig. 1 is a schematic plan view illustrating a display panel according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a display panel displaying at different viewing angles according to an embodiment of the invention;

fig. 3 is a schematic plan structure diagram of a color film substrate according to a first embodiment of the present invention;

fig. 4 is a schematic plan view illustrating an array substrate according to an embodiment of the invention;

FIG. 5 is a schematic cross-sectional view of the display panel in the initial state along the direction A-A in FIG. 3 according to one embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view taken along the direction A-A in FIG. 3 illustrating a display panel in a dual viewing angle display state according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view taken along the direction A-A in FIG. 3 when the display panel is in an oblique-view display state according to one embodiment of the present invention;

FIG. 8 is a schematic view simulation diagram illustrating a dual-view display state of a display panel according to an embodiment of the present invention;

FIG. 9 is a schematic diagram illustrating a transmittance simulation of a display panel in a display area with a first viewing angle according to an embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a transmittance simulation of a display panel in a display area with a second viewing angle according to an embodiment of the invention;

FIG. 11 is a schematic cross-sectional view of the display panel along the direction A-A in FIG. 3 in a dual-view display mode according to the second embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view taken along the direction A-A in FIG. 3 illustrating a display panel in a front view state according to a second embodiment of the present invention;

fig. 13 is a schematic plan view of an array substrate according to a second embodiment of the invention;

fig. 14 is a schematic plan structure view of a color filter substrate according to a third embodiment of the present invention;

fig. 15 is a schematic plan view of an array substrate according to a third embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view taken along the direction B-B in FIG. 14 illustrating a display panel in a dual viewing angle display state according to a third embodiment of the present invention;

fig. 17 is a schematic cross-sectional view of the display panel in the oblique-view display state along the direction B-B in fig. 14 according to the third embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the display panel and the display device according to the present invention with reference to the accompanying drawings and the preferred embodiments is as follows:

[ example one ]

Fig. 1 is a schematic plan view of a display panel according to a first embodiment of the present invention, fig. 2 is a schematic plan view of a display panel according to a first embodiment of the present invention, fig. 3 is a schematic plan view of a color filter substrate according to a first embodiment of the present invention, fig. 4 is a schematic plan view of an array substrate according to a first embodiment of the present invention, fig. 5 is a schematic cross-sectional structure of the display panel according to the first embodiment of the present invention in an initial state along a-a direction in fig. 3, fig. 6 is a schematic cross-sectional structure of the display panel according to the first embodiment of the present invention in a dual-view display state along a-a direction in fig. 3, fig. 7 is a schematic cross-sectional structure of the display panel according to the first embodiment of the present invention in an oblique-view display state along a-a direction in fig. 3, fig. 8 is a schematic view simulation diagram of the display panel according to the first embodiment of the present invention in a dual-view display state, fig. 9 is a schematic view simulation diagram of a, fig. 10 is a schematic diagram illustrating a transmittance simulation of a display panel in a display area with a second viewing angle according to an embodiment of the invention.

As shown in fig. 1 to 10, a display panel according to a first embodiment of the present invention includes a first viewing angle display area I1 for displaying a front viewing angle picture H1 and a second viewing angle display area I2 for displaying an oblique viewing angle picture H2, wherein the first viewing angle display area I1 includes a plurality of first viewing angle display pixels P1, and the second viewing angle display area I2 includes a plurality of second viewing angle display pixels P2.

The display panel includes acolor filter substrate 10, anarray substrate 20 disposed opposite to thecolor filter substrate 10, and aliquid crystal layer 30 located between thecolor filter substrate 10 and thearray substrate 20. Thecolor filter substrate 10 is provided with acommon electrode 13, thearray substrate 20 is provided with afirst pixel electrode 21 and asecond pixel electrode 22 matched with thecommon electrode 13, thefirst pixel electrode 21 corresponds to a first viewing angle display pixel P1, thesecond pixel electrode 22 corresponds to a second viewing angle display pixel P2, and theliquid crystal layer 30 includes a firstliquid crystal layer 31 corresponding to the first viewing angle display area I1 and a secondliquid crystal layer 32 corresponding to the second viewing angle display area I2. The alignment direction of the firstliquid crystal layer 31 on the side close to thecolor filter substrate 10 is perpendicular to the alignment direction on the side close to thearray substrate 20, that is, the first viewing angle display area I1 is a TN display mode, liquid crystal molecules in the firstliquid crystal layer 31 are distributed on thecolor filter substrate 10 and thearray substrate 20 in a twisted 90 ° manner, for example, the alignment direction of the firstliquid crystal layer 31 on the side close to thecolor filter substrate 10 is 0 °, and the alignment direction of the firstliquid crystal layer 31 on the side close to thearray substrate 20 is 270 °. The alignment direction of the secondliquid crystal layer 32 on the side close to thecolor filter substrate 10 is parallel to the alignment direction on the side close to thearray substrate 20, preferably antiparallel. The firstliquid crystal layer 31 and the secondliquid crystal layer 32 have the same alignment direction on the side close to thearray substrate 20, and of course, the firstliquid crystal layer 31 and the secondliquid crystal layer 32 may have the same alignment direction on the side close to thecolor filter substrate 10.

Further, the liquid crystal molecules in theliquid crystal layer 30 are positive liquid crystal molecules, and the positive liquid crystal molecules have the advantage of fast response. As shown in fig. 5, in an initial state (i.e., a state where no voltage is applied to the liquid crystal display device), the positive liquid crystal molecules in theliquid crystal layer 30 are in a lying posture substantially parallel to thecolor filter substrate 10 and thearray substrate 20, i.e., the long axis direction of the positive liquid crystal molecules is substantially parallel to the surfaces of thecolor filter substrate 10 and thearray substrate 20. A small initial pretilt angle may be provided between the positive liquid crystal molecules in the secondliquid crystal layer 32 and thecolor filter substrate 10 and thearray substrate 20, and the range of the initial pretilt angle may be less than or equal to 10 degrees, that is: 0 DEG ≦ theta ≦ 10 deg.

In the present embodiment, as shown in fig. 4, thearray substrate 20 is defined by a plurality ofscan lines 1, a plurality offirst data lines 2, and a plurality ofsecond data lines 3 crossing each other in an insulating manner on a side facing theliquid crystal layer 30 to form a plurality of pixel units SP, the pixel units SP correspond to the first viewing angle display pixels P1 and the pixel units SP correspond to the second viewing angle display pixels P2 one by one, each pixel unit SP is provided with athin film transistor 4, thefirst pixel electrode 21 is electrically connected to thescan lines 1 and thefirst data lines 2 adjacent to thethin film transistors 4 through thethin film transistors 4, and thesecond pixel electrode 22 is electrically connected to thescan lines 1 and thesecond data lines 3 adjacent to thethin film transistors 4 through thethin film transistors 4. Thefirst data line 2 is used for inputting a frame driving signal to thefirst pixel electrode 21 to control the first viewing angle display area I1 to display a forward viewing angle frame H1, and thesecond data line 3 is used for inputting a frame driving signal to thesecond pixel electrode 22 to control the second viewing angle display area I2 to display an oblique viewing angle frame H2. Thethin film transistor 4 includes a gate electrode, an active layer, a drain electrode and a source electrode, the gate electrode and thescan line 1 are located in the same layer and electrically connected, the gate electrode and the active layer are isolated by an insulating layer, the source electrode and the data line are electrically connected, and the drain electrode and the pixel electrode are electrically connected through a contact hole.

Further, as shown in fig. 3, the first viewing angle display area I1 is elongated and corresponds to three rows of pixel units SP, the second viewing angle display area I2 is elongated and corresponds to one row of pixel units SP, and the first viewing angle display area I1 and the second viewing angle display area I2 are alternately distributed, i.e., the extending directions of the first viewing angle display area I1 and the second viewing angle display area I2 are parallel to the data lines. Accordingly, threefirst data lines 2 and onesecond data line 3 are repeatedly arranged on thearray substrate 20 in a cycle. Of course, in other embodiments, the extending directions of the first viewing angle display area I1 and the second viewing angle display area I2 may also be parallel to thescan line 1.

In this embodiment, thecolor filter substrate 10 is provided with thecolor resist layer 12 in a region corresponding to the first viewing angle display pixel P1, and thecolor filter substrate 10 is in a transparent state in a region corresponding to the second viewing angle display pixel P2. Thecolor resist layer 12 includes color resist materials of three colors of red (R), green (G), and blue (B) to form sub-pixels of the three colors of red (R), green (G), and blue (B), respectively. Thecolor film substrate 10 is further provided withblack matrixes 11 corresponding to thescanning lines 1, thefirst data lines 2 and thesecond data lines 3, theblack matrixes 11 are transversely and longitudinally staggered to form a net shape, and thecolor resistance layers 12 are spaced through theblack matrixes 11. The region of thecolor filter substrate 10 corresponding to the second viewing angle display pixel P2 may be filled with a transparent insulating layer. The first viewing angle display area I1 displays a color image of the normal viewing angle image H1, and the second viewing angle display area I2 displays a black-and-white image of the oblique viewing angle image H2.

Further, thecommon electrode 13 is a planar electrode covering the entire surface of thecolor filter substrate 10, and both thefirst pixel electrode 21 and thesecond pixel electrode 22 are block electrodes.

In other embodiments, thecommon electrode 13 may also be a block electrode, and a plurality of block electrodes respectively cover the first viewing angle display pixel P1 and the second viewing angle display pixel P2, and the plurality of block electrodes are connected together or independent of each other.

In this embodiment, thecolor filter substrate 10 is provided with anupper polarizer 41, thearray substrate 20 is provided with alower polarizer 42, a transmission axis of theupper polarizer 41 is parallel to an alignment direction of the firstliquid crystal layer 31 near thecolor filter substrate 10, and a transmission axis of thelower polarizer 42 is parallel to an alignment direction of the firstliquid crystal layer 31 near thearray substrate 20.

Thecolor film substrate 10 and thearray substrate 20 may be made of transparent materials such as glass, acrylic acid, polycarbonate, and the like. The material of thecommon electrode 13, thefirst pixel electrode 21, and thesecond pixel electrode 22 may be a transparent electrode such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).

As shown in fig. 8, a curve M1 is a simulation curve of the first viewing angle display area I1, a curve M2 is a simulation curve of the second viewing angle display area I2, an abscissa is a viewing angle, and an ordinate is luminance, it can be seen from the figure that the viewing angle range of the first viewing angle display area I1 is between-10 ° and 20 °, and the optimal viewing angle is 10 °; the viewing angle range of the second viewing angle display area I2 is between-80 degrees and-30 degrees and between 30 degrees and 80 degrees, and the optimal viewing angle is +/-60 degrees. The optimal visual angle of the first visual angle display area I1 is over against the copilot and the optimal visual angle of the second visual angle display area I2 is over against the driver by adjusting the proper installation position of the display panel, so that the driver can watch black and white maps, the copilot can normally watch color pictures, the driver is prevented from watching display contents irrelevant to driving, and the driving safety is prevented from being influenced. Of course, the display panel can also be used in a shopping mall, one picture is displayed on the left side and the right side, the other picture is displayed in a front view mode, two different pictures can be displayed through one display panel, and the occupied space of the display panel is saved.

As shown in fig. 9, a state of the transmittance of the first viewing angle display area I1 with respect to voltage at a viewing angle of 0 ° (front view) and a viewing angle of 65 ° (oblique view) was simulated, with the abscissa representing the voltage difference between thefirst pixel electrode 21 and thecommon electrode 13 and the ordinate representing the light transmittance. At 0-2V, the penetration rates of the 0-degree visual angle and the 65-degree visual angle are both high, namely, the pictures displayed in the first visual angle display area I1 can be seen from the front visual angle and the squint visual angle. When the pressure difference is greater than 2.2-3.5V, the penetration rate at the 0-degree viewing angle is larger, and the penetration rate at the 65-degree viewing angle is smaller, namely, the front viewing angle can see the picture displayed in the first viewing angle display area I1, and the oblique viewing angle cannot see the picture displayed in the first viewing angle display area I1. When the pressure difference is greater than 4V, the transmittances of the 0 ° viewing angle and the 65 ° viewing angle are both small, that is, the picture displayed in the first viewing angle display area I1 cannot be seen from both the front viewing angle and the squint viewing angle, and the first viewing angle display area I1 is in a black state. Therefore, the driving voltage of thefirst pixel electrode 21 is preferably 2.2 to 5.5V.

As shown in fig. 10, the state of the transmittance of the second viewing angle display area I2 with respect to voltage at the viewing angle of 0 ° (front view) and the viewing angle of 65 ° (oblique view) was simulated, the abscissa is the voltage difference between thesecond pixel electrode 22 and thecommon electrode 13, and the ordinate is the light transmittance. No matter how large the voltage difference is, the transmittance at the viewing angle of 0 ° is small, that is, the picture displayed in the second viewing angle display area I2 cannot be seen at the front viewing angle, and at 0-2V, the transmittance at the viewing angle of 65 ° is small, that is, the second viewing angle display area I2 is in a black state, and at more than 2.2V, the transmittance at the viewing angle of 65 ° is large, that is, the second viewing angle display area I2 is in a white state, so the driving voltage of thesecond pixel electrode 22 is preferably 2.2-4.5V.

As shown in fig. 6, during the bidirectional viewing angle display, a dc common voltage is applied to thecommon electrode 13, and a driving voltage corresponding to the positive viewing angle picture H1, for example, a gray scale voltage of 0 to 255, is applied to thefirst pixel electrode 21, so that the first viewing angle display area I1 displays a normal picture. Thesecond pixel electrode 22 applies a driving voltage corresponding to the oblique view picture H2, such as a gray scale voltage of 0-255, so that the second view display area I2 displays a normal picture, and the oblique view picture H2 includes a left view picture and a right view picture.

As shown in fig. 7, in the oblique viewing angle display, a dc common voltage is applied to thecommon electrode 13, and a maximum driving voltage (e.g., 5.5V) is applied to thefirst pixel electrode 21, so that the first viewing angle display area I1 is in a black state. Thesecond pixel electrode 22 applies a driving voltage corresponding to the oblique view picture H2, such as a gray scale voltage of 0-255, so that the second view display area I2 displays a normal picture. Of course, only the front view angle image H1 may be displayed, the dc common voltage may be applied to thecommon electrode 13, and the driving voltage corresponding to the front view angle image H1, for example, the gray scale voltage of 0 to 255, may be applied to thefirst pixel electrode 21, so that the first view angle display area I1 displays a normal image. And no voltage is applied to thesecond pixel electrode 22, so that the second viewing angle display area I2 is in a black state. That is, the front view screen H1 and the squint view screen H2 are independent of each other and do not interfere with each other.

[ example two ]

Fig. 11 is a schematic cross-sectional structure view of the display panel along the direction a-a in fig. 3 in a dual-view display state according to the second embodiment of the present invention, fig. 12 is a schematic cross-sectional structure view of the display panel along the direction a-a in fig. 3 in a front-view display state according to the second embodiment of the present invention, and fig. 13 is a schematic plan structure view of the array substrate according to the second embodiment of the present invention. As shown in fig. 11 to 13, the display panel according to the second embodiment of the present invention is substantially the same as the display panel according to the first embodiment (fig. 1 to 10), except that in this embodiment, thearray substrate 20 is further provided with athird pixel electrode 23 matching with thesecond pixel electrode 22, thethird pixel electrode 23 corresponds to the second viewing angle display pixel P2, thethird pixel electrode 23 is electrically connected to thescan line 1 and thefirst data line 2 adjacent to thethin film transistor 4 through thethin film transistor 4, and thesecond pixel electrode 22 and thethird pixel electrode 23 are located at different layers and insulated from each other.

Further, thesecond pixel electrode 22 is located below thethird pixel electrode 23, thesecond pixel electrode 22 is a block electrode, and thethird pixel electrode 23 is a comb-shaped electrode having a slit.

As shown in fig. 11, in the bidirectional viewing angle display, a dc common voltage is applied to thecommon electrode 13, and a driving voltage corresponding to the positive viewing angle picture H1, for example, a gray scale voltage of 0 to 255, is applied to thefirst pixel electrode 21, so that the first viewing angle display area I1 displays a normal picture. Thesecond pixel electrode 22 and thethird pixel electrode 23 apply the same voltage, i.e. apply a driving voltage corresponding to the squint angle picture H2, such as a gray scale voltage of 0-255, so that the second viewing angle display area I2 displays a normal picture, and the squint angle picture H2 includes a left viewing angle picture and a right viewing angle picture.

As shown in fig. 12, in displaying the positive viewing angle image H1, a dc common voltage is applied to thecommon electrode 13, and a driving voltage corresponding to the positive viewing angle image H1, for example, a gray scale voltage of 0 to 255, is applied to thefirst pixel electrode 21, so that the first viewing angle display area I1 displays a normal image. When the front view angle picture H1 near the second view angle display pixel P2 displays white, no voltage is applied to thesecond pixel electrode 22, a driving voltage corresponding to the front view angle picture H1, for example, a grayscale voltage of 255 is applied to thethird pixel electrode 23, at this time, thesecond pixel electrode 22 acts as a common voltage for thethird pixel electrode 23 and forms a Fringe Field Switching (FFS) mode, a horizontal electric field is formed between thesecond pixel electrode 22 and thethird pixel electrode 23, and the positive liquid crystal molecules in the secondliquid crystal layer 32 are deflected in the horizontal direction, so that the second view angle display pixel P2 displays white, thereby improving the contrast displayed by the front view angle picture H1.

In contrast to the first embodiment, in the present embodiment, by disposing thethird pixel electrode 23 on thesecond pixel electrode 22, when only the front view image H1 is displayed, the second viewing angle display pixel P2 in the second viewing angle display area I2 can also participate in the white display of the front view image H1, so as to improve the brightness and contrast of the front view image H1.

It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.

[ third example ]

Fig. 14 is a schematic plan structure view of a color filter substrate according to a third embodiment of the present invention, fig. 15 is a schematic plan structure view of an array substrate according to the third embodiment of the present invention, fig. 16 is a schematic cross-sectional structure view of a display panel according to the third embodiment of the present invention, in a dual-viewing-angle display state, along a direction B-B in fig. 14, and fig. 17 is a schematic cross-sectional structure view of the display panel according to the third embodiment of the present invention, in an oblique-viewing-angle display state, along the direction B-B in fig. 14. As shown in fig. 14 to 17, a display panel according to a third embodiment of the present invention is substantially the same as the display panel according to the first embodiment (fig. 1 to 10), except that in the present embodiment, the first viewing angle display area I1 is long and corresponds to one row of pixel units SP, the second viewing angle display area I2 is long and corresponds to one row of pixel units SP, and the first viewing angle display area I1 and the second viewing angle display area I2 are alternately distributed. That is, onefirst data line 2 and onesecond data line 3 are periodically and repeatedly arranged on thearray substrate 20. Therefore, the front-view picture H1 displayed in the first view angle display area I1 and the squint-angle picture H2 displayed in the second view angle display area I2 are more uniform, and the difference between the resolutions of the front-view picture H1 and the squint-angle picture H2 is smaller. Of course, in other embodiments, the first viewing angle display area I1 may correspond to three rows of pixel units SP (one row of red first viewing angle display pixels P1, one row of green first viewing angle display pixels P1 and one row of blue first viewing angle display pixels P1), the second viewing angle display area I2 may correspond to three rows of pixel units SP (one row of red second viewing angle display pixels P2, one row of green second viewing angle display pixels P2 and one row of blue second viewing angle display pixels P2), and the first viewing angle display area I1 and the second viewing angle display area I2 are alternately distributed.

Further, thecolor filter substrate 10 is provided with a color resistlayer 12 in the regions corresponding to the first viewing angle display pixel P1 and the second viewing angle display pixel P2. The color filter comprises color resistance materials of three colors of red (R), green (G) and blue (B) to respectively form sub-pixels of the three colors of red (R), green (G) and blue (B). As shown in fig. 14, a row of red first viewing angle display pixels P1, a row of green first viewing angle display pixels P1 and a row of blue first viewing angle display pixels P1 in the first viewing angle display area I1 are arranged in a periodic manner. In the second viewing angle display region I2, a row of red second viewing angle display pixels P2, a row of green second viewing angle display pixels P2, and a row of blue second viewing angle display pixels P2 are arranged in a periodic repeating manner. Therefore, the second viewing angle display area I2 can also display color images to improve the color of the oblique viewing angle image H2.

Compared with the first embodiment, in the present embodiment, the first viewing angle display area I1 and the second viewing angle display area I2 are both corresponding to a column of pixel units SP and are alternately distributed, so that the difference between the resolutions of the positive viewing angle picture H1 and the oblique viewing angle picture H2 is reduced; in addition, thecolor filter substrate 10 is also provided with a color resistlayer 12 in a region corresponding to the second viewing angle display pixel P2, so as to improve the color of the oblique viewing angle picture H2.

It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.

The invention also provides a display device comprising the display panel.

In this document, the terms of upper, lower, left, right, front, rear and the like are used to define the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the sake of clarity and convenience in technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A display panel comprises a color film substrate (10), an array substrate (20) arranged opposite to the color film substrate (10) and a liquid crystal layer (30) positioned between the color film substrate (10) and the array substrate (20), and is characterized in that the display panel comprises a first visual angle display area (I1) used for displaying a front visual angle picture (H1) and a second visual angle display area (I2) used for displaying an oblique visual angle picture (H2), the first visual angle display area (I1) comprises a plurality of first visual angle display pixels (P1), the second visual angle display area (I2) comprises a plurality of second visual angle display pixels (P2), a common electrode (13) is arranged on the color film substrate (10), the array substrate (20) is provided with a first pixel electrode (21) and a second pixel electrode (22) matched with the common electrode (13), and the first pixel electrode (21) and the first visual angle display pixels (P1) correspond to each other, the second pixel electrode (22) corresponds to the second viewing angle display pixel (P2), the liquid crystal layer (30) includes a first liquid crystal layer (31) corresponding to the first viewing angle display area (I1) and a second liquid crystal layer (32) corresponding to the second viewing angle display area (I2), an alignment direction of the first liquid crystal layer (31) near the color filter substrate (10) is perpendicular to an alignment direction of the array substrate (20), and an alignment direction of the second liquid crystal layer (32) near the color filter substrate (10) is parallel to the alignment direction of the array substrate (20).

2. The display panel according to claim 1, wherein the array substrate (20) defines a plurality of pixel units (SP) on a side facing the liquid crystal layer (30) by a plurality of scan lines (1) and a plurality of first data lines (2) and a plurality of second data lines (3) crossing each other in an insulating manner, the pixel units (SP) and the first viewing angle display pixels (P1) and the pixel units (SP) and the second viewing angle display pixels (P2) are in one-to-one correspondence, each pixel unit (SP) is internally provided with a thin film transistor (4), the first pixel electrode (21) is electrically connected with the scanning line (1) and the first data line (2) which are adjacent to the thin film transistor (4) through the thin film transistor (4), the second pixel electrode (22) is electrically connected with the scanning line (1) and the second data line (3) which are adjacent to the thin film transistor (4) through the thin film transistor (4).

3. The display panel of claim 2, wherein the first viewing angle display region (I1) is elongated and corresponds to three rows of the pixel units (SP), the second viewing angle display region (I2) is elongated and corresponds to one row of the pixel units (SP), and the first viewing angle display region (I1) and the second viewing angle display region (I2) are alternately disposed.

4. The display panel of claim 2, wherein the first viewing angle display regions (I1) are elongated and correspond to a row of the pixel units (SP), the second viewing angle display regions (I2) are elongated and correspond to a row of the pixel units (SP), and the first viewing angle display regions (I1) and the second viewing angle display regions (I2) are alternately arranged.

5. The display panel according to claim 3 or 4, wherein a color resist layer (12) is disposed in a region of the color filter substrate (10) corresponding to the first viewing angle display pixel (P1), and a region of the color filter substrate (10) corresponding to the second viewing angle display pixel (P2) is in a transparent state, or the color filter substrate (10) is disposed in regions corresponding to the first viewing angle display pixel (P1) and the second viewing angle display pixel (P2) and both having the color resist layer (12).

6. The display panel according to claim 2, wherein the array substrate (20) further has a third pixel electrode (23) coupled to the second pixel electrode (22), the third pixel electrode (23) corresponds to the second viewing angle display pixel (P2), the third pixel electrode (23) is electrically connected to the scan line (1) and the first data line (2) adjacent to the thin film transistor (4) through the thin film transistor (4), and the second pixel electrode (22) and the third pixel electrode (23) are located at different layers and isolated from each other.

7. The display panel according to claim 6, wherein the second pixel electrode (22) is located below the third pixel electrode (23), the second pixel electrode (22) is a block electrode, and the third pixel electrode (23) is a comb-shaped electrode with slits.

8. The display panel according to claim 1, wherein the common electrode (13) is a planar electrode entirely covering the color filter substrate (10), and the first pixel electrode (21) is a block electrode.

9. The display panel according to claim 1, wherein an upper polarizer (41) is disposed on the color filter substrate (10), a lower polarizer (42) is disposed on the array substrate (20), a transmission axis of the upper polarizer (41) is parallel to an alignment direction of the first liquid crystal layer (31) on a side close to the color filter substrate (10), and a transmission axis of the lower polarizer (42) is parallel to an alignment direction of the first liquid crystal layer (31) on a side close to the array substrate (20).

10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.

Images