CN113589579A - Semi-transparent semi-reflection display device - Google Patents

Abstract

The invention provides a semi-transparent semi-reflective display device which comprises a display panel, a backlight source and a processing module. The display panel comprises a semi-transparent semi-reflective layer, a thin film transistor layer and a liquid crystal layer. The transflective layer comprises a light transmittance with a first preset value and a light reflectance with a second preset value. The thin film transistor layer comprises a thin film transistor and a photosensitive unit. The light sensing unit is used for sensing the brightness of the ambient light. The liquid crystal layer is arranged between the semi-transparent semi-reflecting layer and the thin film transistor layer. The backlight source is arranged on one side of the display panel facing the semi-transparent semi-reflective layer. The processing module is used for controlling the backlight source. When the brightness of the ambient light is smaller than a preset threshold, the processing module starts the backlight source, and light incident to the transflective layer from the backlight source penetrates through the transflective layer at a ratio of a first preset value. When the brightness of the ambient light is larger than or equal to the preset threshold, the processing module turns off the backlight source, and the ambient light irradiates the semi-transparent and semi-reflective layer and is reflected by the semi-transparent and semi-reflective layer at a ratio of a second preset value to form reflected light.

Description

Semi-transparent semi-reflection display device

Technical Field

The invention relates to the technical field of display, in particular to a semi-transparent semi-reflective display device.

Background

Conventional display devices can be broadly classified into transmissive type and reflective type according to their display modes.

The transmission display device has the advantages of high contrast, high brightness, good color purity and the like. However, since the transmissive display device forms display light by a built-in backlight, the transmissive display device has a disadvantage of high power consumption. When the brightness of the ambient light is much greater than the brightness of the display light transmitted through the display device, the ambient light covers the display light and enters the eyes of the viewer, so that the contrast of the display screen of the transmission display device is reduced and the visibility is poor.

The reflective display device uses the reflected light of the ambient light as the display light without using a backlight, and reflects the display screen of the reflective display device to the eyes of the viewer. Therefore, the reflective display device has the advantages of low power consumption, portability and the like. Moreover, when the brightness of the ambient light is high, the reflective display device can maintain good visibility. However, on the contrary, when the luminance of the ambient light is insufficient, the contrast of the display screen of the reflective display device is lowered and the visibility is poor; even when there is no ambient light, the reflective display device cannot display.

With the development of display technology, people have higher and higher requirements on the display quality of display devices, and meanwhile, the requirements on energy conservation, eye protection and the like are also needed. Therefore, a display device with low power consumption, good visibility and high environmental compatibility is an important research and development direction in display technology.

Disclosure of Invention

The present invention provides a transflective display device, which combines the advantages of the transmissive display device and the reflective display device of the prior art. By sensing the ambient light, the transflective display device of the invention is switched to the transmissive display mode when the brightness of the ambient light is relatively small; and switches to the reflective display mode when the brightness of the ambient light is relatively large.

The semi-transparent semi-reflective display device comprises a display panel, a backlight source and a processing module. The display panel comprises a semi-transparent semi-reflective layer, a thin film transistor layer and a liquid crystal layer. The transflective layer comprises a light transmittance with a first preset value and a light reflectance with a second preset value. The thin film transistor layer comprises a thin film transistor and a photosensitive unit. The photosensitive unit is used for sensing the brightness of the ambient light. The liquid crystal layer is arranged between the semi-transparent semi-reflecting layer and the thin film transistor layer. The backlight source is arranged on one side, facing the semi-transparent and semi-reflective layer, of the display panel. The processing module is used for controlling the backlight source. When the brightness of the ambient light is smaller than a preset threshold, the processing module turns on the backlight source, and light incident on the transflective layer from the backlight source penetrates through the transflective layer at a ratio of the first preset value. When the brightness of the ambient light is greater than or equal to the preset threshold, the processing module turns off the backlight source, and the ambient light irradiates the transflective layer and is reflected by the transflective layer at the ratio of the second preset value to form reflected light.

In one embodiment, the preset threshold is greater than or equal to 100 lumens.

In one embodiment, the first preset value is between 10 and 60 percent, and the second preset value is between 40 and 90 percent. The semi-transparent semi-reflective layer is a metal layer, and the aperture opening ratio of the metal layer is 10-60%.

In one embodiment, the first preset value is between 10 and 60 percent, and the second preset value is between 40 and 90 percent. The semi-transparent semi-reflective layer comprises a substrate and a reflective layer arranged on the substrate, the reflective layer is made of reflective materials, the aperture opening ratio of the reflective layer is 10-60%, and the reflective layer is used for enabling ambient light irradiated on the reflective layer to generate mirror reflection.

In one embodiment, the first preset value is between 10 and 60 percent, and the second preset value is between 40 and 90 percent. The semi-transparent semi-reflective layer comprises a substrate, a micro-structural layer arranged on the substrate and a reflective layer arranged on the micro-structural layer, the reflective layer is made of a reflective material, the aperture opening ratio of the reflective layer is 10-60%, and the micro-structural layer and the reflective layer are used for enabling ambient light irradiated on the reflective layer to generate diffuse reflection.

In an embodiment, the display panel further includes a display region and a non-display region. The photosensitive unit is located in the non-display area.

In one embodiment, the photosensitive unit includes an input electrode, an output electrode, and a photosensitive layer connecting the input electrode and the output electrode, and a resistance of the photosensitive layer changes according to the brightness of the ambient light.

In one embodiment, a channel is formed between the input electrode and the output electrode, and the length of the channel is greater than or equal to the width of the channel.

In an embodiment, the display panel further includes a first polarizing layer and a second polarizing layer. The first polarizing layer is arranged on one side, facing the backlight source, of the semi-transparent and semi-reflective layer. The second polarizing layer is arranged on one side, back to the liquid crystal layer, of the thin film transistor layer.

In an embodiment, the first polarizing layer comprises a linear polarizer, an 1/4 wave plate, or a 1/2 wave plate, and the second polarizing layer comprises the linear polarizer, the 1/4 wave plate, or the 1/2 wave plate.

In the present invention, the transflective display device senses the brightness of the ambient light through the photosensitive unit, and switches a display mode of the transflective display device according to the brightness of the ambient light. When the brightness of the ambient light is smaller than a preset threshold value, the processing module turns on the backlight source, and the transflective display device is switched to the transmissive display mode. When the brightness of the ambient light is greater than or equal to the preset threshold, the processing module closes the backlight source, and the transflective display device is switched to the reflective display mode. Meanwhile, the light transmittance of the semi-transparent and semi-reflective layer is set to be 10-60% and the light reflectivity is set to be 40-90%, so that the semi-transparent and semi-reflective display device can simultaneously realize two display modes of transmission and reflection display in a single display device; that is, the transflective display device provides high contrast and high brightness display in a low light environment and provides energy-saving and eye-protecting display in a high light environment.

Drawings

Fig. 1 is a block diagram of a transflective display device according to the present invention.

Fig. 2 is a schematic structural diagram of a display panel and a backlight source according to the present invention.

Fig. 3 is a schematic top view of the transflective layer of the present invention.

Fig. 4 is a schematic structural diagram of a transflective layer according to the present invention.

Fig. 5 is a schematic structural view of another transflective layer according to the present invention.

Fig. 6 is a schematic structural view of another transflective layer according to the present invention.

Fig. 7 is a schematic top view of the display panel according to the present invention.

FIG. 8 is a schematic perspective view of a photosensitive unit according to the present invention.

Fig. 9a and 9b are schematic optical path diagrams of ambient light when the transflective display device of the present invention is in the transmissive display mode.

Fig. 10a and 10b are schematic optical path diagrams of the ambient light when the transflective display device of the present invention is in the reflective display mode.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

The invention provides a semi-transparent and semi-reflective display device. Fig. 1 is a block diagram of the transflective display device according to the present invention. The transflective display device includes adisplay panel 100, abacklight 200, and a processing module 300.

Fig. 2 is a schematic structural diagram of thedisplay panel 100 and thebacklight 200 according to the present invention. Thedisplay panel 100 includes atransflective layer 110, a thin-film transistor layer 120, and aliquid crystal layer 130. The thin-film transistor layer 120 includes a thin-film transistor 121. Theliquid crystal layer 130 is disposed between thetransflective layer 110 and the thinfilm transistor layer 120. Thebacklight 200 is disposed on a side of thedisplay panel 100 facing thetransflective layer 110. The processing module 300 is used for controlling thebacklight source 200.

Similar to the liquid crystal driving method of the conventional display panel, when thedisplay panel 100 displays a picture, thethin film transistor 121 is driven by a voltage to form an electric field on the upper and lower sides of theliquid crystal layer 130. The electric field generated by thethin film transistor 121 can drive theliquid crystal molecules 131 in theliquid crystal layer 130 to deflect. The deflectedliquid crystal molecules 131 generate a blocking effect on light incident into theliquid crystal layer 130, even deflect the light, thereby achieving brightness control of a display screen.

As shown in fig. 2, in an embodiment, the thin-film transistor layer 120 further includes alight sensing unit 122, and thelight sensing unit 122 is used for sensing the brightness of theambient light 400. When the brightness of theambient light 400 is smaller than a preset threshold, the processing module 300 determines that the brightness of theambient light 400 is weak light, and the processing module 300 turns on thebacklight 200, so that the transflective display device is switched to a transmissive display mode. On the contrary, when the brightness of theambient light 400 is greater than or equal to the preset threshold, the processing module 300 determines that the brightness of theambient light 400 is strong light, and the processing module 300 turns off thebacklight 200, so that the transflective display device is switched to the reflective display mode. Therefore, the transflective display device can provide high-contrast and high-brightness display in a low-light environment, and can provide energy-saving and eye-protecting display in a high-light environment.

It should be noted that, for setting the preset threshold for determining the intensity of theambient light 400, the setting must be adjusted according to different application products, different usage modes, or usage environments of the transflective display device.

In one embodiment, the predetermined threshold is set to greater than or equal to 100 lumens. In practical applications, the preset threshold may be set in a step of 10 lumens, and the preset threshold may be set to 100 lumens, 110 lumens, or 120 lumens, etc. For example, when the preset threshold is set to 100 lumens, the processing module 300 determines that the brightness of theambient light 400 sensed by thelight sensing unit 122 is less than 100 lumens, and then defines the brightness of theambient light 400 as weak light; when the processing module 300 determines that the brightness of theambient light 400 sensed by thelight sensing unit 122 is greater than or equal to 100 lumens, the brightness of theambient light 400 is defined as strong light.

In the present invention, when the brightness of theambient light 400 is determined to be weak light, the transflective display device is switched to the transmissive display mode, and thebacklight 200 emits light. When the brightness of theambient light 400 is determined to be strong light, the transflective display device is switched to the reflective display mode, and thebacklight 200 does not emit light. To assist in achieving the above effects, thetransflective layer 110 is disposed between thebacklight 200 and theliquid crystal layer 130. Thetransflective layer 110 has both partial light transmittance and partial light reflectance. Therefore, thetransflective layer 110 can transmit light emitted from thebacklight 200, and the light enters eyes of a viewer as display light of the transflective display device. Meanwhile, thetransflective layer 110 can reflect theambient light 400 irradiated onto thetransflective layer 110, so that the ambient light enters the eyes of the viewer as the display light of the transflective display device.

In the present invention, thetransflective layer 110 includes a light transmittance having a first preset value and a light reflectance having a second preset value. Therefore, the light incident on thetransflective layer 110 from thebacklight 200 will penetrate through thetransflective layer 110 at a ratio of the first preset value. Meanwhile, when theenvironment light 400 irradiates thetransflective layer 110, theenvironment light 400 is reflected by thetransflective layer 110 at a ratio of the second preset value to form a reflected light.

In one embodiment, the first preset value of thetransflective layer 110 is set to 10-60%. In other words, the second preset value of thetransflective layer 110 can be set to 40-90%. When the transflective display device is in the transmissive display mode, 10-60% of the light emitted from thebacklight 200 can penetrate through thetransflective layer 110. When the transflective display device is in the reflective display mode, 40-90% of theambient light 400 incident on thetransflective layer 110 can be reflected.

In an extreme case where the brightness of theambient light 400 is weak or even nonexistent, when the transflective display device is in the transmissive display mode, only the light emitted from thebacklight 200 passes through thetransflective layer 110 at a rate of 10-60% as the display light into the eyes of the viewer. In a general usage scenario, when the transflective display device is in the transmissive display mode, besides the light emitted from thebacklight 200 can penetrate through thetransflective layer 110 at a rate of 10-60% as the display light, theambient light 400 also impinges on thetransflective layer 110 and 40-90% of the ambient light is reflected by thetransflective layer 110 to form the display light to enter the eyes of the viewer.

Fig. 3 is a schematic top view of thetransflective layer 110 according to the present invention. In one embodiment, thetransflective layer 110 may include a plurality ofopenings 111. When the light transmittance of thetransflective layer 110 is set to 10-60%, it means that the aperture ratio of thetransflective layer 110 is 10-60%, and the area of the plurality ofopenings 111 occupies 10-60% of the total area of thetransflective layer 110. When the transflective display device is in the transmissive display mode, light emitted from thebacklight 200 passes through thetransflective layer 110 via the plurality ofopenings 111 and enters the eyes of the viewer as the display light.

Fig. 4 is a schematic structural diagram of atransflective layer 110 according to the present invention. In one embodiment, thetransflective layer 110 is ametal layer 112. Themetal layer 112 has an aperture ratio of 10 to 60%. Themetal transflective layer 110 can also be directly used as an electrode layer of thedisplay panel 100, and forms an electric field with thethin film transistor 121 in the thinfilm transistor layer 120 when a voltage is applied, so as to drive theliquid crystal molecules 131 in theliquid crystal layer 130 to deflect. In this embodiment, since thetransflective layer 110 is used as the electrode layer, thedisplay panel 100 does not need to additionally provide an electrode layer on the upper side or the lower side of thetransflective layer 110, thereby reducing the number of production processes.

Fig. 5 is a schematic structural diagram of anothertransflective layer 110 according to the present invention. In one embodiment, thetransflective layer 110 includes asubstrate 113 and areflective layer 114, and thereflective layer 114 is disposed on thesubstrate 113. Similarly, the aperture ratio of thereflective layer 114 is 10 to 60%. Since thereflective layer 114 is made of a reflective material, when the transflective display device is in the reflective display mode, the flatreflective layer 114 can cause theambient light 400 irradiated on thereflective layer 114 to generate a mirror reflection to form a reflective light, so that the reflective light enters the eyes of the viewer as the display light of the transflective display device.

Fig. 6 is a schematic structural diagram of anothertransflective layer 110 according to the present invention. In one embodiment, thetransflective layer 110 includes asubstrate 113, amicrostructure layer 115, and areflective layer 114, wherein themicrostructure layer 115 is disposed on thesubstrate 113, and thereflective layer 114 is disposed on themicrostructure layer 115. Similarly, the aperture ratio of thereflective layer 114 is 10 to 60%. Thereflective layer 114 is a light reflective material. The present embodiment forms themicrostructure layer 115 to have a surface with a shape of unevenness, and roughness. When the transflective display device is in the reflective display mode, themicrostructure layer 115 and thereflective layer 114 can diffuse theambient light 400 irradiated to thereflective layer 114, and the reflected light formed by theambient light 400 irradiated to thereflective layer 114 can be more uniform or dispersed. Meanwhile, by changing the shape of themicrostructure layer 115, the light reflectivity of thetransflective layer 110 can be adjusted, so that the light reflectivity can be further adjusted under the condition of a fixed aperture ratio.

Please refer to fig. 2 and fig. 7. Fig. 7 is a schematic top view of thedisplay panel 100 according to the present invention. As shown in fig. 2, in an embodiment, thedisplay panel 100 further includes a display area a and a non-display area B. Thelight sensing unit 122 is located in the non-display area B. As shown in fig. 7, the display area a is located at the center of thedisplay panel 100, and the non-display area B surrounds the display area a; that is, the non-display region B is a peripheral position of thedisplay panel 100. In order not to affect the normal display of the display area a of thedisplay panel 100, thephotosensitive unit 122 is preferably disposed at a peripheral position of thedisplay panel 100. However, in another embodiment, to realize the transflective display device with a narrow frame, thelight sensing unit 122 may be disposed between the pixels of thedisplay panel 100 instead of being disposed at the periphery of thedisplay panel 100, as a part of the black matrix of thedisplay panel 100.

Please refer to fig. 2 and fig. 8. Fig. 8 is a schematic perspective view of thephotosensitive unit 122 according to the present invention. As shown in fig. 2, in an embodiment, thephotosensitive unit 122 includes aninput electrode 1221, anoutput electrode 1222, and aphotosensitive layer 1223, wherein thephotosensitive layer 1223 connects theinput electrode 1221 and theoutput electrode 1222. The resistance of thephotosensitive layer 1223 changes depending on the brightness of theambient light 400. In this embodiment, thephotosensitive layer 1223 is a photosensitive material, and the resistance thereof changes according to the brightness of theambient light 400. The greater the brightness of theambient light 400 irradiated on thephotosensitive layer 1223, the smaller the resistance of thephotosensitive layer 1223. Conversely, the smaller the brightness of theambient light 400 irradiated on thephotosensitive layer 1223, the greater the resistance of thephotosensitive layer 1223. Theinput electrode 1221, thephotosensitive layer 1223, and theoutput electrode 1222 form a series circuit, and when the transflective display device is operated, theinput electrode 1221 continuously receives a fixed voltage and transmits the voltage to thephotosensitive layer 1223 and theoutput electrode 1222. When thephotosensitive layer 1223 is irradiated by theambient light 400 with different brightness, the resistance of thephotosensitive layer 1223 changes, and the voltage measured by theoutput electrode 1222 also changes. Therefore, the brightness of the correspondingambient light 400 can be known by the voltage measured by theoutput electrode 1222. In one embodiment, as shown in fig. 8, achannel 1224 is formed between theinput electrode 1221 and theoutput electrode 1222. In the present embodiment, in order to ensure the validity of the voltage measured by theoutput electrode 1222, the length L of thechannel 1224 is set to be equal to or greater than the width D of thechannel 1224. In other words, the ratio L/D of the length L of thechannel 1224 to the width D of thechannel 1224 is greater than or equal to 1.

As shown in fig. 2, in an embodiment, thedisplay panel 100 further includes a firstpolarizing layer 140 and a secondpolarizing layer 150. The firstpolarizing layer 140 is disposed on a side of thetransflective layer 110 facing thebacklight 200. The secondpolarizing layer 150 is disposed on a side of the thinfilm transistor layer 120 opposite to theliquid crystal layer 130. The first and secondpolarizing layers 140 and 150 are disposed to control the light emitted from thebacklight 200 and the reflected light formed by the semi-transparent andsemi-reflective layer 110 irradiated by theambient light 400. By disposing the firstpolarizing layer 140 and the secondpolarizing layer 150 on two sides of thedisplay panel 100, the two lights can be shielded or even deflected, so as to realize the transmissive display mode and the reflective display mode of the transflective display device.

In one embodiment, the firstpolarizing layer 140 includes a linear polarizer, an 1/4 wave plate, or a 1/2 wave plate, and the secondpolarizing layer 150 includes the linear polarizer, the 1/4 wave plate, or the 1/2 wave plate.

Fig. 9a and 9b are schematic optical path diagrams ofambient light 400 when the transflective display device of the present invention is in the transmissive display mode. In this embodiment, the firstpolarizing layer 140 and the secondpolarizing layer 150 are taken as two linear polarizers with their transmission axes parallel to each other as an example, and when thedisplay panel 100 does not pass through the electric field, theliquid crystal molecules 131 are not deflected, so that light can pass through thedisplay panel 100; that is, thedisplay panel 100 is taken as a linearly polarized normally white mode as an example.

When the transflective display device is in the transmissive display mode, thebacklight 200 emits light. Fig. 9a shows a situation where thedisplay panel 100 has not been applied with an electric field. After passing through the firstpolarizing layer 140, the light 500 emitted from thebacklight 200 is converted into linearlypolarized light 510. Then, after the linearly polarized light 510 passes through the liquid crystal layer 130 (vertical alignment), the polarization direction of the linearlypolarized light 510 is unchanged. Since the firstpolarizing layer 140 and the secondpolarizing layer 150 are two linear polarizers that are parallel to each other, the linearlypolarized light 510 can pass through the secondpolarizing layer 150, and then the transflective display device displays full white.

When the transflective display device is in the transmissive display mode, thebacklight 200 emits light. Fig. 9b shows a case where theliquid crystal molecules 131 are deflected when an electric field is applied to thedisplay panel 100. After passing through the firstpolarizing layer 140, the light emitted from thebacklight 200 is converted into linearlypolarized light 510. Then, the linearlypolarized light 510 is transformed into linearlypolarized light 520 deflected by 90 degrees after passing through theliquid crystal layer 130 having a wavelength phase difference of 1/2. Since the firstpolarizing layer 140 and the secondpolarizing layer 150 are two linear polarizers that are parallel to each other, the linearlypolarized light 520 deflected by 90 degrees cannot pass through the secondpolarizing layer 150, and the transflective display device displays complete black.

Please refer to fig. 10a and fig. 10b, which are schematic optical path diagrams of theambient light 400 when the transflective display device of the present invention is in the reflective display mode. In this embodiment, the firstpolarizing layer 140 and the secondpolarizing layer 150 are taken as two linear polarizers with their transmission axes parallel to each other as an example, and when thedisplay panel 100 does not pass through the electric field, theliquid crystal molecules 131 are not deflected, so that light can pass through thedisplay panel 100; that is, thedisplay panel 100 is taken as a linearly polarized normally white mode as an example.

When the transflective display device is in the reflective display mode, thebacklight 200 does not emit light. Fig. 10a shows a situation where thedisplay panel 100 has not been applied with an electric field. After passing through the secondpolarizing layer 150, theambient light 400 is converted into linearlypolarized light 410. Then, the linearly polarized light passes through the liquid crystal layer 130 (vertical alignment), the semi-transparent andsemi-reflective layer 110, and passes through theliquid crystal layer 130 again, and the polarization direction of the reflected linearlypolarized light 420 remains unchanged. Finally, the reflected linearlypolarized light 420 may pass through the secondpolarizing layer 150, and the transflective display device displays full white.

When the transflective display device is in the reflective display mode, thebacklight 200 does not emit light. Fig. 10b shows a case where theliquid crystal molecules 131 are deflected when an electric field is applied to thedisplay panel 100. After passing through the secondpolarizing layer 150, theambient light 400 is converted into linearlypolarized light 410. Then, the linearlypolarized light 410 is converted into circularlypolarized light 430 after passing through theliquid crystal layer 130 with 1/4 wavelength (the polarization wavelength can be adjusted according to actual requirements). After the circularlypolarized light 430 is irradiated on thetransflective layer 110, the circularlypolarized light 430 reflects and changes the rotation direction (left-handed light to right-handed light or right-handed light to left-handed light). After the reflected circularly polarized light 440 passes through theliquid crystal layer 130 again, it is converted into linearlypolarized light 450 deflected by 90 degrees. Finally, the linearlypolarized light 450 deflected by 90 degrees cannot pass through the secondpolarizing layer 150, and the transflective display device displays full black.

In the present invention, the transflective display device senses the brightness of theambient light 400 through thephotosensitive unit 122, and switches the display mode of the transflective display device according to the brightness of theambient light 400. When the brightness of theambient light 400 is smaller than a preset threshold, the processing module 300 turns on thebacklight 200, and the transflective display device is switched to the transmissive display mode. When the brightness of theambient light 400 is greater than or equal to the preset threshold, the processing module 300 turns off thebacklight 200, and the transflective display device is switched to the reflective display mode. Meanwhile, the light transmittance of thetransflective layer 110 is set to be 10-60% and the light reflectivity is set to be 40-90%, so that the transflective display device can simultaneously realize two display modes of transmission and reflection display in a single display device; that is, the transflective display device provides high contrast and high brightness display in a low light environment and provides energy-saving and eye-protecting display in a high light environment.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (10)

1. A transflective display device, comprising:

a display panel, comprising:

the transflective layer comprises a light transmittance with a first preset value and a light reflectivity with a second preset value;

the thin film transistor layer comprises a thin film transistor and a photosensitive unit, and the photosensitive unit is used for sensing the brightness of ambient light; and

the liquid crystal layer is arranged between the semi-transparent semi-reflective layer and the thin film transistor layer;

the backlight source is arranged on one side, facing the semi-transparent and semi-reflective layer, of the display panel; and

a processing module for controlling the backlight source;

when the brightness of the ambient light is smaller than a preset threshold, the processing module turns on the backlight source, and light incident on the transflective layer by the backlight source penetrates through the transflective layer at a ratio of the first preset value; and

when the brightness of the ambient light is greater than or equal to the preset threshold, the processing module turns off the backlight source, and the ambient light irradiates the transflective layer and is reflected by the transflective layer at a ratio of the second preset value to form reflected light.

2. The transflective display device according to claim 1, wherein the preset threshold is greater than or equal to 100 lumens.

3. The transflective display device according to claim 1, wherein the first preset value is between 10-60%, and the second preset value is between 40-90%; and

the semi-transparent semi-reflective layer is a metal layer, and the aperture opening ratio of the metal layer is 10-60%.

4. The transflective display device according to claim 1, wherein the first preset value is between 10-60%, and the second preset value is between 40-90%; and

the semi-transparent semi-reflective layer comprises a substrate and a reflective layer arranged on the substrate, the reflective layer is made of reflective materials, the aperture opening ratio of the reflective layer is 10-60%, and the reflective layer is used for enabling ambient light irradiated on the reflective layer to generate mirror reflection.

5. The transflective display device according to claim 1, wherein the first preset value is between 10-60%, and the second preset value is between 40-90%; and

the semi-transparent semi-reflective layer comprises a substrate, a micro-structural layer arranged on the substrate and a reflective layer arranged on the micro-structural layer, the reflective layer is made of a reflective material, the aperture opening ratio of the reflective layer is 10-60%, and the micro-structural layer and the reflective layer are used for enabling ambient light irradiated on the reflective layer to generate diffuse reflection.

6. The transflective display device according to claim 1, wherein the display panel further comprises a display region and a non-display region, and the light sensing unit is located in the non-display region.

7. The transflective display device according to claim 1, wherein the photosensitive unit includes an input electrode, an output electrode, and a photosensitive layer connecting the input electrode and the output electrode, the resistance of the photosensitive layer being changed in accordance with the brightness of the ambient light.

8. The transflective display device according to claim 7, wherein a channel is formed between the input electrode and the output electrode, and a length of the channel is equal to or greater than a width of the channel.

9. The transflective display device according to claim 1, wherein the display panel further comprises:

the first polarizing layer is arranged on one side, facing the backlight source, of the semi-transparent semi-reflective layer; and

and the second polarizing layer is arranged on one side of the thin film transistor layer, which is back to the liquid crystal layer.

10. The transflective display device according to claim 9, wherein the first polarizing layer comprises a linear polarizer, an 1/4 wave plate, or a 1/2 wave plate, and the second polarizing layer comprises the linear polarizer, the 1/4 wave plate, or the 1/2 wave plate.

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