CN109856850B

Movatterモバイル変換

Info

Publication number: CN109856850B
Application number: CN201910247140.1A
Authority: CN
Inventors: 余朋飞
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-13
Anticipated expiration: 2039-03-29
Also published as: CN109856850A; WO2020199515A1

Abstract

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

With the development of the full-screen technology, the technology of placing electronic components such as cameras under a display screen is a development trend. However, in order to ensure the lighting effect of the electronic components under the screen, such as the camera, the material above the camera needs to be removed, i.e. the hole digging technology, which affects the display effect.

Therefore, the existing liquid crystal display panel has the technical problem that holes need to be dug in the area of the camera under the screen, and improvement is needed.

Disclosure of Invention

The invention provides a display device, which is used for relieving the technical problem that holes need to be dug in the lower camera area of the existing liquid crystal display panel.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

the invention provides a display device, which comprises a display panel, a backlight module, an electronic element and a shading component, wherein the display device comprises a first display area and a second display area corresponding to the arrangement position of the electronic element, wherein:

the electronic element is arranged between the display panel and the backlight module;

the shading component is arranged between the electronic element and the backlight module;

when the electronic element works, the second display area of the display panel does not display content, and the shading component blocks light between the backlight module and the electronic element through outside light; when the electronic element is not in operation, the content is displayed in the second display area of the display panel and does not penetrate through external light, and the light shielding component conducts the light between the backlight module and the electronic element.

In the display device of the invention, the electronic element is fixed on one side of the display panel facing the backlight module.

In the display device of the present invention, the light shielding member is fixed to the display panel.

In the display device of the present invention, the light shielding member is fixed to the backlight module.

In the display device of the present invention, the light-shielding member is a liquid crystal cell including a first electrode plate and a second electrode plate provided in opposition to each other, and a liquid crystal filled between the first electrode plate and the second electrode plate.

In the display device of the present invention, the electronic component is a camera.

In the display device of the present invention, the display device includes a first polarizer, and the first polarizer is disposed on one side of the light shielding member close to the backlight module and located in the second display region.

In the display device of the present invention, the display device further includes a second polarizer and a third polarizer, the second polarizer is disposed on a side of the display panel away from the electronic component, the third polarizer is disposed between the display panel and the electronic component, and a through hole is formed in the second display region by the third polarizer.

In the display device of the invention, the display panel comprises an array substrate and a color film substrate which are arranged in a box-to-box manner, the color film substrate is arranged in the light emergent direction of the array substrate, the color film substrate comprises a black matrix layer, and the width of the black matrix layer in the second display area is smaller than that in the first display area.

In the display device of the invention, the color film substrate further comprises a color resistance layer, the color resistance layer and the black matrix layer are arranged on the same layer, and the thickness of the color resistance layer in the second display area is smaller than that in the first display area.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention. The display device comprises adisplay panel 10, abacklight module 20, anelectronic element 30 and alight shielding member 40.

Thedisplay panel 10 includes anarray substrate 11, acolor filter substrate 12, a firstliquid crystal 13 disposed between the array substrate and the color filter substrate, and asealant 14 for bonding thecolor filter substrate 11 and thearray substrate 12. In the manufacturing process of the liquid crystal display panel, thecolor film substrate 12 is coated with thesealant 14 and gold dots (not shown), the firstliquid crystal 13 is dropped on thearray substrate 10, and thedisplay panel 10 is formed by alignment and lamination, wherein thesealant 14 is used for sealing the display panel to limit the firstliquid crystal 13 in thedisplay panel 10.

Thebacklight module 20 is disposed in a direction away from thecolor filter substrate 12 of thearray substrate 11, and is configured to provide a backlight source, where the backlight source emitslight 21.

Theelectronic component 30 is disposed between thedisplay panel 10 and thebacklight module 20, and in the present embodiment, theelectronic component 30 is fixed on a side of thedisplay panel 10 facing thebacklight module 20.

Thedisplay panel 10 includes a display area and a non-display area, that is, the display device includes a display area and a non-display area, theelectronic component 30 is disposed in the display area of the display device, and the display area of the display device includes afirst display area 100 and asecond display area 200 corresponding to a position where theelectronic component 30 is disposed.

Thelight shielding member 40 is disposed between theelectronic device 30 and thebacklight module 20 and located in thesecond display region 200. When theelectronic device 30 is in operation, the content is not displayed in thesecond display area 200 of thedisplay panel 10, and thelight shielding member 40 blocks thelight 21 between thebacklight module 20 and theelectronic device 30 through theexternal light 110; when theelectronic device 30 is not in operation, the content is displayed in thesecond display area 200 of thedisplay panel 10 and theexternal light 110 is not transmitted, and thelight shielding member 40 conducts thelight 21 between thebacklight module 20 and theelectronic device 30.

In one embodiment, thelight shielding member 40 is fixed on thedisplay panel 10.

In one embodiment, thelight shielding member 40 is fixed on thebacklight assembly 20.

In one embodiment, thelight shielding member 40 is a liquid crystal cell, and includes afirst electrode plate 41 and asecond electrode plate 42 provided to the cell, and a secondliquid crystal 43 filled between thefirst electrode plate 41 and thesecond electrode plate 42.

The liquid crystal cell blocks or conducts thelight 21 between thebacklight module 20 and theelectronic component 30 by changing the deflection angle of the liquid crystal molecules in the secondliquid crystal 43. When theelectronic device 30 is in operation, the liquid crystal molecules of the secondliquid crystal 43 deflect to block thelight 21 emitted from thebacklight module 20 from passing through theelectronic device 30, and when theelectronic device 30 is not in operation, the liquid crystal molecule deflection angle of the secondliquid crystal 43 is changed to allow thelight 21 emitted from thebacklight module 20 to pass through theelectronic device 30.

In one embodiment, the display device includes a control circuit (not shown) for controlling the deflection of the secondliquid crystal 43 in the liquid crystal cell to block or conduct thelight 21 between thebacklight module 20 and theelectronic element 30.

The control circuit controls the deflection of the secondliquid crystal 43 by adjusting the voltage of the liquid crystal cells. The liquid crystal box adopts the design of the electrode plates, so that the display principle of the liquid crystal display panel is simulated, the capacitance value of the electrode plates is adjusted by applying different voltages, and the rotation of liquid crystal molecules between the electrode plates is controlled, thereby achieving the effect of controlling light to pass through.

In one embodiment,electronic component 30 is a camera.

When the camera is turned on, the control circuit controls the voltage applied between thefirst electrode plate 41 and thesecond electrode plate 42 to control the liquid crystal molecules in the secondliquid crystal 43 to turn, when the liquid crystal molecules in the secondliquid crystal 43 deflect to a certain angle, thelight 21 emitted by thebacklight module 20 cannot penetrate through thelight shielding member 40, that is, in thesecond display area 200, the light 22 cannot reach the firstliquid crystal 13, the display panel does not display a picture, in thefirst display area 100, thelight 21 normally reaches the firstliquid crystal 13, and thedisplay panel 10 normally displays a picture, so that the image captured by the camera is displayed in thedisplay panel 10 in thefirst display area 100.

In this embodiment, the display device further includes a display panel control circuit (not shown), and the display panel control circuit is configured to control the firstliquid crystal 13 in thesecond display area 200 to deflect when the camera operates, so that theexternal light 110 enters the camera, and at the same time, control the firstliquid crystal 13 in thefirst display area 100 not to deflect, so that the display panel in thefirst display area 100 normally displays the image.

When the camera is turned off, the control circuit controls no voltage to be applied between thefirst electrode plate 41 and thesecond electrode plate 42, and at this time, liquid crystal molecules in the secondliquid crystal 43 deflect in one direction, so that thelight 21 emitted by thebacklight module 20 passes through the camera and reaches the firstliquid crystal 13, and thedisplay panel 10 in the area above the camera normally displays pictures.

In an embodiment, the display device further includes a monitoring circuit (not shown) for monitoring whether theelectronic component 30 is in an operating state, and when theelectronic component 30 is monitored to be in the operating state, the control circuit is triggered to operate, and the control circuit controls the voltage applied between thefirst electrode plate 41 and thesecond electrode plate 42 to control the turning direction of the liquid crystal molecules in the secondliquid crystal 43, so as to block thelight 21 emitted from thebacklight module 20 from passing through theelectronic component 30.

When the operation of theelectronic component 30 is not monitored, the control circuit is not triggered, and no voltage is applied between thefirst electrode plate 41 and thesecond electrode plate 42 by the control circuit, so that thelight 21 emitted from thebacklight module 20 can pass through theelectronic component 30.

In one embodiment, the light shielding member control circuit is electrically connected to thefirst electrode plate 41.

In one embodiment, the light shielding member control circuit is electrically connected to thesecond electrode plate 42.

In one embodiment, thefirst electrode plate 41 and thesecond electrode plate 42 are made of the same material, and both thefirst electrode plate 41 and thesecond electrode plate 42 are made of transparent Indium-Tin Oxide (ITO).

In an embodiment, thefirst electrode plate 41 and thesecond electrode plate 42 are made of different materials, the material of thefirst electrode plate 41 is transparent Indium-Tin Oxide (ITO), and the material of thesecond electrode plate 42 is selected from one of a group consisting of Indium-Gallium-Zinc Oxide (IGZO), Zinc Oxide (ZnO), Tin Oxide (Sta nnousoxide, SnO), Indium-Zinc Oxide (IZO), Gallium-Zinc Oxide (Gallium-Zinc Oxide, GaZnO), Zinc-Tin Oxide (Zinc-Tin Oxide, ZTO), and a mixture thereof.

In the present embodiment, the display device further includes a fixing member 50, and the fixing member 50 is disposed on a side surface of theelectronic element 30 parallel to the light emitting direction Y of thebacklight light source 21, and is in contact with thelight shielding member 30.

In one embodiment, the fixing member 50 is integrally formed with thelight shielding member 30.

In one embodiment, the fixing member 50 is formed separately from thelight shielding member 30.

The fixing member 50 is used to fix the camera on thearray substrate 11, and simultaneously, can shield the areas on both sides of the camera, so as to prevent thelight 21 emitted by thebacklight module 20 from entering the firstliquid crystal 13 above the camera when the camera is in use, thereby affecting the imaging effect.

In one embodiment, the light transmittance of the display device in thesecond display region 200 is greater than that in thefirst display region 100.

The display device includes afirst polarizer 61, asecond polarizer 62, and athird polarizer 63, where thefirst polarizer 61 is disposed on one side of thelight shielding member 40 close to thebacklight module 20 and located in thesecond display region 200, thesecond polarizer 62 is disposed on one side of thedisplay panel 10 away from theelectronic component 30, that is, on thecolor film substrate 12, thethird polarizer 63 is disposed between thedisplay panel 10 and theelectronic component 30, that is, on thearray substrate 11, and a through hole (not shown) is formed in thethird polarizer 63 in thesecond display region 200.

Thethird polarizer 63 is formed with a through hole in thesecond display area 200, the path of theexternal light 110 entering theelectronic component 30 is thinned, the transmittance of the display device in thesecond display area 200 is increased, and meanwhile, the hole digging design of thethird polarizer 63 above theelectronic component 30 is compensated because thefirst polarizer 61 is formed in thesecond display area 200 and corresponds to the through hole of thethird polarizer 63, so that the light 21 emitted by thebacklight module 20 passes through the two layers of polarizers of thefirst polarizer 61 and thesecond polarizer 62, and the display device displays normally.

Thearray substrate 11 and thecolor filter substrate 12 are arranged in a box-to-box manner, thecolor filter substrate 12 is arranged in the light emitting direction Y of thearray substrate 11, and thecolor filter substrate 12 includes afirst substrate 121, ablack matrix layer 122, a color resistlayer 123, and afirst alignment layer 124.

Thefirst substrate 121 is usually made of glass, or other materials, and is not limited herein, theblack matrix layer 122 is formed on thefirst substrate 121, the color resistlayer 123 is formed on thefirst substrate 121 and is spaced apart from theblack matrix layer 122, and the color resistlayer 123 includes a plurality of color resist blocks disposed in a plurality of sub-pixel regions in a one-to-one correspondence.

Theblack matrix layer 122 surrounds a plurality of sub-pixel regions distributed in an array on thefirst substrate 121, and the plurality of color resist blocks are disposed in the plurality of sub-pixel regions in a one-to-one correspondence. The color-resistant blocks in the three sub-pixel regions in each pixel region can be respectively a red color-resistant block (R), a blue color-resistant block (B) and a green color-resistant block (G), wherein the red color-resistant block only allows red light to pass, the blue color-resistant block only allows blue light to pass, and the green color-resistant block only allows green light to pass.

Theblack matrix layer 122 is made of a metal material or an organic material, and theblack matrix layer 122 is opaque.

In one embodiment, the width of theblack matrix layer 122 in thesecond display area 200 is smaller than that of thefirst display area 100, that is, in thesecond display area 200, the area blocking light from entering becomes narrow, the path of theexternal light 110 entering theelectronic component 30 becomes wide, and the light transmittance of the display device in thesecond display area 200 is increased.

In one embodiment, the thickness of the color resistlayer 123 in thesecond display area 200 is less than that in thefirst display area 100. Since theexternal light 110 needs to enter theelectronic element 30 through the color resistlayer 123 above theelectronic element 30, the thickness of the color resistlayer 123 in thesecond display region 200 is reduced, so that the path of theexternal light 110 entering theelectronic element 30 is reduced, and the light transmittance of the display device in thesecond display region 200 is increased.

Afirst alignment layer 124 is disposed on a side of thecolor filter substrate 12 close to the firstliquid crystal 13, and is used for aligning liquid crystal molecules of the firstliquid crystal 13 in a specific direction.

The material of thefirst alignment layer 124 is usually Polyimide (PI), and is mainly prepared by a printing method and an inkjet method, i.e., an alignment liquid is applied on the substrate by a printing or inkjet method, and then the alignment liquid is solidified to form thefirst alignment layer 124.

In one embodiment, the thickness of thefirst alignment layer 124 in thesecond display region 200 is less than the thickness in thefirst display region 100. Since theexternal light 110 needs to enter theelectronic device 30 through thefirst alignment layer 124 above theelectronic device 30, the thickness of thefirst alignment layer 124 in thesecond display region 200 is reduced, so that the path of theexternal light 110 entering theelectronic device 30 is reduced, and the light transmittance of the display device in thesecond display region 200 is increased.

Certainly, the film structure of thecolor filter substrate 12 is not limited thereto, and between theblack matrix layer 122 and thefirst alignment layer 124, thecolor filter substrate 12 further includes other films, and the light transmittance of the display device in thesecond display area 200 may also be increased by thinning the other light-transmitting films.

Thearray substrate 11 includes asecond substrate 111, a light-shielding layer 112, and asecond alignment layer 123. Thesecond substrate 111 is usually glass, but may be made of other materials, and is not limited herein.

The light-shielding layer 112 is formed on thesecond substrate 111, and in one embodiment, the light-shielding layer 112 forms a through hole (not shown) in thesecond display region 200. Since theexternal light 110 needs to enter theelectronic component 30 through thelight shielding layer 112 above theelectronic component 30, the through hole of thesecond alignment layer 113 in thesecond display region 200 is reduced, i.e., the path of theexternal light 110 entering theelectronic component 30 is reduced, thereby increasing the light transmittance of the display device in thesecond display region 200.

Asecond alignment layer 113 for aligning liquid crystal molecules of the firstliquid crystal 13 in a specific direction is disposed on a side of thearray substrate 12 adjacent to the firstliquid crystal 13.

The material of thesecond alignment layer 113 is usually polyimide (Po l y imi de, P I), and is mainly prepared by a printing method and an inkjet method, i.e., an alignment liquid is applied onto the substrate by a printing or inkjet method, and then the alignment liquid is solidified to form thesecond alignment layer 113.

In one embodiment, the thickness of thesecond alignment layer 113 in thesecond display region 200 is smaller than that in thefirst display region 100. Since theexternal light 110 needs to enter theelectronic component 30 through thesecond alignment layer 113 above theelectronic component 30, the thickness of thesecond alignment layer 113 in thesecond display region 200 is reduced, so that the path of theexternal light 110 entering theelectronic component 30 is reduced, and the light transmittance of the display device in thesecond display region 200 is increased.

Of course, the film structure of thearray substrate 11 is not limited thereto, and may further include other films, such as a buffer layer, an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source electrode, a drain electrode, and a passivation layer (not shown) on the light-shielding layer 112.

The active layer includes source and drain regions formed by doping N-type impurity ions or P-type impurity ions, and a channel region between the source and drain regions. The active layer can be an amorphous silicon material, a polycrystalline silicon material or a metal oxide material, and the like, wherein when the active layer is made of a polycrystalline silicon material, the active layer can be formed by adopting a low-temperature amorphous silicon technology, that is, the amorphous silicon material is melted by the laser to form the polycrystalline silicon material. In addition, various methods such as a Rapid Thermal Annealing (RTA) method, a Solid Phase Crystallization (SPC) method, an Excimer Laser Annealing (ELA) method, a Metal Induced Crystallization (MIC) method, a Metal Induced Lateral Crystallization (MILC) method, or a Sequential Lateral Solidification (SLS) method may also be used.

The material of the gate insulating layer is typically silicon oxide, silicon nitride, or the like, and may be a single-layer or multi-layer structure. The gate electrode is positioned on the gate insulating layer, and may be a single or multi-layer structure including gold (Au), silver (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminum (Al), Molybdenum (MO), or chromium (Cr), or a single or multi-layer structure such as aluminum (Al): neodymium (Nd) alloy and Molybdenum (MO) alloy, tungsten (W) alloy.

An interlayer insulating layer is positioned on the gate electrode, and the interlayer insulating layer may be formed of an insulating material such as silicon oxide or silicon nitride.

The source and drain electrodes are on the interlayer insulating layer, and are electrically connected to the source and drain regions, respectively, through vias that penetrate the gate insulating layer and the interlayer insulating layer.

The passivation layer is positioned on the source electrode and the drain electrode, and may be formed of an inorganic material such as silicon oxide or silicon nitride.

The film structure is not limited to this, and other structures, such as a bottom gate structure, may also be used.

The light transmittance of the display device in thesecond display region 200 can also be increased by thinning other light-transmitting film layers.

Theexternal light 110 enters theelectronic component 30, and needs to pass through all the film layers above theelectronic component 30 to thin the film layers, so that the light transmittance of the display device in thesecond display area 200 is increased, theexternal light 110 can better enter theelectronic component 30, and the display image quality of the display device is further enhanced.

It should be noted that only a part of the film layers may be modified, or all the film layers that can be thinned or widened may be modified, and those skilled in the art may design the film layers as needed to increase the light transmittance of the display device in thesecond display region 200.

When theelectronic component 30 is turned on, theexternal light 110 enters theelectronic component 30, and since the light transmittance of the display device in thesecond display area 200 is increased, the image captured by theelectronic component 30 is clearer, and no hole needs to be dug in the area above theelectronic component 30.

Meanwhile, the liquid crystal cell below theelectronic component 30 is powered on, the liquid crystal molecules of thesecond liquid crystal 43 deflect to block the light 21 emitted by thebacklight module 20 in the area from passing through, and the captured image of theelectronic component 30 is displayed through the screen in thefirst display area 100. When theelectronic component 30 is turned off, the liquid crystal cell below theelectronic component 30 is not powered on, the liquid crystal molecules of thesecond liquid crystal 43 are at the original deflection angle, the light 21 emitted by thebacklight module 20 is allowed to penetrate through theelectronic component 30, and the display panel in the area above theelectronic component 30 displays pictures, so that thedisplay panel 10 can normally display when theelectronic component 30 works and does not work.

According to the above embodiments:

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A display device is characterized by comprising a display panel, a backlight module, an electronic element and a shading component, wherein the display device comprises a first display area and a second display area corresponding to the arrangement position of the electronic element, and the display device comprises:

when the electronic element works, the second display area of the display panel does not display content, and the shading component blocks light between the backlight module and the electronic element through outside light; when the electronic element is not in operation, the content is displayed in the second display area of the display panel and does not penetrate through external light, and the light shielding component conducts the light between the backlight module and the electronic element; the electronic element is fixed on one side of the display panel facing the backlight module, the shading component is a liquid crystal box, and the liquid crystal box comprises a first electrode plate and a second electrode plate which are arranged in a box-to-box mode and liquid crystal filled between the first electrode plate and the second electrode plate.

2. The display device according to claim 1, wherein the light shielding member is fixed on the display panel.

3. The display device according to claim 1, wherein the light shielding member is fixed to the backlight module.

4. The display device of claim 1, wherein the electronic component is a camera.

5. The display device according to claim 1, wherein the display device comprises a first polarizing plate disposed on a side of the light shielding member adjacent to the backlight module and in the second display region.

6. The display device according to claim 5, further comprising a second polarizing plate provided on a side of the display panel away from the electronic component, and a third polarizing plate provided between the display panel and the electronic component, the third polarizing plate having a through hole formed in the second display region.

7. The display device according to claim 1, wherein the display panel comprises an array substrate and a color film substrate which are arranged in a box-to-box manner, the color film substrate is arranged in a light emergent direction of the array substrate, the color film substrate comprises a black matrix layer, and the width of the black matrix layer in the second display area is smaller than that in the first display area.

8. The display device according to claim 7, wherein the color filter substrate further comprises a color resist layer, the color resist layer and the black matrix layer are arranged on the same layer, and the thickness of the color resist layer in the second display region is smaller than that in the first display region.