Display device and driving method thereof

Abstract

The invention discloses a display device and a driving method thereof, a display panel comprises a plurality of driving switches and an electrochromic layer, and the electrochromic layer is arranged on at least part of the driving switches; the driving circuit comprises a control module, a switching module and a dimming module, the control module controls the driving switch to enter a driving stage or a photosensitive stage, and the switching module controls the light transmittance of the electrochromic layer according to the stage of the driving switch; when the driving switch enters a driving stage, the driving switch drives the corresponding pixel, and the switching module switches the electrochromic layer into a non-transparent state; when the driving switch enters a photosensitive stage, the switching module switches the electrochromic layer to be at least partially transparent, and the corresponding driving switch receives external ambient light. Through the design, the problem that the display aperture ratio is reduced due to the existence of the ambient light sensor can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of displays, and in particular, to a display device and a driving method thereof. Background Art

[0002] As people's dependence on mobile terminals increases, to ensure that users can adapt to the screen brightness of mobile terminals, when the ambient light becomes brighter, the mobile terminal will increase the screen brightness accordingly; when the ambient light becomes darker, the mobile terminal will decrease the screen brightness accordingly.

[0003] Currently, generally, an ambient light sensor is built into the mobile terminal, and the brightness of the ambient light around is sensed by the ambient light sensor to automatically adjust the screen brightness. However, the ambient light sensor not only occupies the space of the whole machine, but also reduces the screen-to-body ratio of the display screen and affects the aperture ratio of the display screen. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a display device and a driving method thereof, so as to avoid the problem that the display aperture ratio is reduced due to the presence of the ambient light sensor.

[0005] The embodiments of the present application disclose a display device. The display device includes a display panel and a driving circuit for driving the display panel. The display panel includes a plurality of data lines and a plurality of scan lines. The plurality of data lines and the plurality of scan lines are divided into a plurality of pixel regions. The display panel includes a plurality of driving switches and an electrochromic layer. The plurality of driving switches are respectively disposed in corresponding pixel regions and are connected to corresponding data lines and scan lines; the electrochromic layer is disposed on at least some of the driving switches and is used to control the light reception amount of the corresponding driving switches; the driving circuit includes a control module, a switching module, and a dimming module. The control module is connected to the driving switches and controls the driving switches to enter a driving stage or a light-sensing stage; the switching module is connected to the electrochromic layer and the control module and controls the light transmittance of the electrochromic layer according to the stage where the driving switches are located; the dimming module is connected to the driving switches and adjusts the data signal output to the data lines according to the current signal output by the driving switches in the light-sensing stage; wherein, when the driving switches enter the driving stage, the driving switches receive data signals to drive corresponding pixels, and the switching module switches the electrochromic layer to an opaque state; when the driving switches enter the light-sensing stage, the driving switches receive blank signals, and the switching module switches the electrochromic layer to at least partially transparent state, and the corresponding driving switches receive external ambient light.

[0006] Optionally, the driving circuit includes a gate driving circuit and a source driving circuit. The gate driving circuit is connected to the scanning line, and the source driving circuit is respectively connected to the data line, the control module, and the dimming module. When the driving switch enters the driving stage, the gate driving circuit outputs a scanning signal to the scanning line, and the source driving circuit outputs a data signal to the data line. When the driving switch enters the photosensitive stage, the gate driving circuit outputs a scanning signal to the scanning line, and the source driving circuit outputs a blank signal to the data line.

[0007] Optionally, the electrochromic layer includes a plurality of electrochromic strips. The length direction of the electrochromic strip is the same as the length direction of the scanning line, and each electrochromic strip covers one row of the driving switches. The switching module is integrated in the gate driving circuit.

[0008] Optionally, the gate driving circuit includes a plurality of gate driving units, and the switching module includes a plurality of switching units. Each switching unit drives a corresponding electrochromic strip, and the switching units are integrally arranged in the gate driving units one by one. When the gate driving unit outputs a scanning signal to the corresponding row of scanning lines, the switching unit simultaneously outputs a switching signal to the electrochromic strip in the same row to control the light transmittance of the electrochromic strip.

[0009] Optionally, the electrochromic layer includes a plurality of electrochromic strips. The length direction of the electrochromic strip is the same as the length direction of the data line, and each electrochromic strip covers one column of the driving switches.

[0010] Optionally, the plurality of electrochromic strips include a first electrochromic strip and a second electrochromic strip. When the driving switch enters the photosensitive stage, the switching module switches the first electrochromic strip to a fully transparent state, and the switching module switches the second electrochromic strip to an opaque state. The dimming module adjusts the data signal output to the data line according to the current signal output by the driving switch under the first electrochromic strip and the current signal output by the driving switch under the second electrochromic strip.

[0011] Optionally, the first electrochromic strip and the second electrochromic strip are arranged adjacent to each other.

[0012] Optionally, the multiple electrochromic strips include a first electrochromic strip, a second electrochromic strip, and a third electrochromic strip. When the driving switch enters the photosensitive stage, the switching module switches the first electrochromic strip to a fully transparent state, the switching module switches the second electrochromic strip to an opaque state, and the switching module switches the third electrochromic strip to a semi-transparent state; the dimming module adjusts the data signal output to the data line according to the current signals output by the driving switches under the first electrochromic strip, the current signals output by the driving switches under the second electrochromic strip, and the current signals output by the driving switches under the third electrochromic strip.

[0013] Optionally, the photosensitive stage is located in the blank stage between two adjacent frames of images.

[0014] An embodiment of the present application also discloses a driving method for a display device, which is used to drive the display device as described above. The driving method includes: Display step: The driving switch receives a data signal, drives the corresponding pixel, and the switching module switches the electrochromic layer to an opaque state; Detection step: The driving switch receives a blank signal, and the switching module switches the electrochromic layer to at least partially transparent state; Dimming step: The dimming module adjusts the data signal output to the data line according to the current signal output by the driving switch in the detection step.

[0015] The beneficial effects of the embodiments of the present application are as follows: In the embodiments of the present application, the control module enables the driving switch to enter the driving stage or the photosensitive stage, and the switching module is used to control the light transmittance of the electrochromic layer. When the display panel is normally displaying, the driving switch enters the driving stage, and the electrochromic layer is switched to an opaque state, so that the driving switch is not affected by ambient light and can normally drive the corresponding pixel; when the display panel needs to detect ambient light to adjust the screen brightness according to the ambient light brightness, the driving switch enters the photosensitive stage, and the electrochromic layer is switched to at least partially transparent state, so that at least some of the driving switches can receive the ambient light transmitted through the electrochromic layer, detect the brightness of the ambient light according to the leakage current effect, and finally the dimming module adjusts the brightness of the display panel according to the detection result of the ambient light by the driving switch in the photosensitive stage, achieving the effect of adaptive dimming. Through the above design, the driving switches that originally drive pixels in the display panel are directly reused as ambient light sensors. By adjusting the received signals of the driving switches to switch the states of the driving switches, the driving switches can not only drive pixels but also detect the ambient light brightness, so that it is not necessary to additionally provide an ambient light sensor in the display panel, thus not reducing the screen-to-body ratio of the display panel and avoiding reducing the aperture ratio of the display panel. Description of the Drawings

[0016] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, which form a part of the specification, illustrate the implementation manners of the present application, and together with the written description, explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 is a plan view of a display device provided by the first embodiment of the present application; Figure 2 is a cross-sectional view of a display device provided by the first embodiment of the present application; Figure 3 is a plan view of another display device provided by the first embodiment of the present application; Figure 4 is a timing diagram provided by the first embodiment of the present application; Figure 5 is a flowchart of a driving method of a display device provided by the first embodiment of the present application; Figure 6 is a plan view of a display device provided by the second embodiment of the present application; Figure 7 is a schematic diagram of an implementation manner in the second embodiment of the present application; Figure 8 is a schematic diagram of another implementation manner in the second embodiment of the present application; Figure 9 is a schematic diagram of another implementation manner in the second embodiment of the present application; Figure 10 is a plan view of a display device provided by the third embodiment of the present application.

[0017] Among them, 10, display device; 100, display panel; 100A, array substrate; 100B, color filter substrate; 110, data line; 120, scan line; 130, driving switch; 140, electrochromic layer; 141, electrochromic strip; 142, first electrochromic strip; 143, second electrochromic strip; 144, third electrochromic strip; 150, pixel electrode; 160, color resistor; 170, black matrix; 171, opening; 180, planarization layer; 190, common electrode; 200, driving circuit; 210, control module; 220, switching module; 221, switching unit; 230, dimming module; 240, gate driving circuit; 241, gate driving unit; 250, source driving circuit. Detailed implementation manners

[0018] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative. However, the present application can be specifically implemented in many alternative forms and should not be construed as being limited only to the embodiments set forth herein.

[0019] In addition, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0020] As Figure 1 shown, as a display device provided in the first embodiment of the present application, the display device 10 includes a display panel 100 and a driving circuit 200 for driving the display panel 100. The display panel 100 includes a plurality of data lines 110 and a plurality of scan lines 120. The plurality of data lines 110 and the plurality of scan lines 120 divide the display area of the display panel 100 into a plurality of pixel regions arranged in an array. The display panel 100 further includes a plurality of driving switches 130 and an electrochromic layer 140. The plurality of driving switches 130 are respectively disposed in corresponding pixel regions and are connected to corresponding data lines 110 and scan lines 120. The electrochromic layer 140 is disposed on at least part of the driving switches 130 for controlling the amount of received light of the corresponding driving switches 130.

[0021] It can be understood that "the electrochromic layer 140 is disposed on at least part of the driving switches 130" means that the electrochromic layer 140 can cover all the driving switches 130 in the display panel 100, or only cover the driving switches 130 in one pixel region, or one row, or one column, or an individual number of driving switches 130.

[0022] It can be understood that "the electrochromic layer 140 is disposed on at least part of the driving switches 130 for controlling the amount of received light of the corresponding driving switches 130" means that the electrochromic layer 140 can control the amount of received light of the driving switches 130 covered thereunder. By adjusting the electrochromic layer 140, the driving switches 130 thereunder can receive ambient light from the outside or cannot receive ambient light from the outside.

[0023] Moreover, in the display panel 100, in addition to the electrochromic layer 140 newly added in the embodiments of the present application, other film layer structures such as a passivation layer and a black matrix are also provided above the driving switch 130. However, in the embodiments of the present application, if all the structures above the driving switch 130 except the electrochromic layer 140 are transparent structures, then there is no need to adjust the structures above the driving switch 130; if there are opaque structures above the driving switch 130 in addition to the electrochromic layer 140, then an opening design needs to be made for this opaque structure so that the driving switch 130 can receive external light.

[0024] Combined with Figure 1 and Figure 2 As shown, taking the display panel 100 as a liquid crystal panel as an example, the display panel 100 includes an array substrate 100A and a color filter substrate 100B which are oppositely arranged. The driving switch 130, the data line 110, and the scanning line 120 are all arranged on the array substrate 100A. The gate of the driving switch 130 is connected to the scanning line 120, the source of the driving switch 130 is connected to the data line 110, and the drain of the driving switch 130 is connected to the pixel electrode 150 on the array substrate 100A. At the same time, a color resistor 160, a black matrix 170, a planarization layer 180, and a common electrode 190 are provided on the color filter substrate 100B. The black matrix 170 is arranged between adjacent color resistors 160. The planarization layer 180 is arranged on the color resistor 160 and the black matrix 170. The common electrode 190 is arranged on the planarization layer 180. An opening 171 is provided in the part of the black matrix 170 that overlaps the driving switch 130, that is, a through hole is made at the position where the black matrix 170 covers the driving switch 130. As for the electrochromic layer 140, it can be arranged on the array substrate 100A or on the color filter substrate 100B, which is not limited herein.

[0025] Of course, the display panel 100 in the embodiments of the present application can also be an organic electroluminescent display panel (OLED, Organic Light-Emitting Diode) or other types of display panels. When an organic electroluminescent display panel is adopted, in each pixel, in addition to the driving switch 130, there is also a control switch, and even more other types of switches. However, the control module 210 and the dimming module 230 are still only connected to the driving switch 130 among them, and the electrochromic layer 140 also covers at least part of the driving switch 130.

[0026] In an embodiment of the present application, the driving switch 130 has a thin-film transistor structure, specifically an amorphous silicon thin-film transistor structure. The driving switch 130 can not only receive data signals and control the current to be transmitted to the pixel electrode to drive the pixel. Moreover, when the semiconductor of the driving switch 130 is irradiated by light, a photocurrent will be generated. According to this photocurrent, the ambient light intensity can be detected, and then the brightness of the display panel 100 can be adjusted to achieve the effect of adaptive dimming.

[0027] As Figure 1 shown, in an embodiment of the present application, the driving circuit 200 includes a control module 210, a switching module 220, and a dimming module 230. The control module 210 is connected to the driving switch 130 to control the driving switch 130 to enter the driving stage or the light-sensing stage; the switching module 220 is connected to the electrochromic layer 140 and the control module 210 to control the light transmittance of the electrochromic layer 140 according to the stage where the driving switch 130 is located; the dimming module 230 is connected to the driving switch 130 to adjust the data signal output to the data line 110 according to the current signal output by the driving switch 130 in the light-sensing stage; wherein, when the driving switch 130 enters the driving stage, the driving switch 130 receives a data signal to drive the corresponding pixel, and the switching module 220 switches the electrochromic layer 140 to an opaque state; when the driving switch 130 enters the light-sensing stage, the driving switch 130 receives a blank signal, and the switching module 220 switches the electrochromic layer 140 to at least partially transparent, so that the driving switch 130 below the electrochromic layer 140 receives external ambient light.

[0028] It can be understood that the source electrode of the driving switch 130 is connected to the data line 110, and the data line 110 provides a data signal for the source electrode of the driving switch 130; the "blank signal" means that the driving switch 130 does not receive a driving signal. When the driving switch 130 enters the light-sensing stage, the current output by the driving switch 130 is generated due to the semiconductor of the driving switch 130 being irradiated by light; of course, whether the driving switch 130 is in the driving stage or the light-sensing stage, the gate electrode of the driving switch 130 will receive a control signal to keep the driving switch 130 in an on state.

[0029] It can be understood that "the electrochromic layer 140 is switched to at least a partially transparent state" can be understood as that when it is only necessary to perform ambient light detection on a part of the pixel area, that is, a part of the driving switches 130 or individual driving switches 130, it is only necessary to control the electrochromic layer 140 in the corresponding area above these driving switches 130 to be switched to a transparent state; at this time, it is only necessary to divide the electrochromic layer 140 into multiple independent parts so that the electrochromic layer 140 corresponding to the driving switches 130 in different areas can be independently controlled. When it is necessary to perform ambient light detection on all the driving switches 130 in the display area, the entire electrochromic layer 140 needs to be switched to a transparent state. At this time, the entire electrochromic layer 140 can be designed as a whole to control the electrochromic layer 140 as a whole, or the electrochromic layer 140 can be divided into multiple independent parts so that the electrochromic layer 140 corresponding to the driving switches 130 in different areas can be independently controlled.

[0030] Of course, according to the actual situation, the electrochromic layer 140 can also be switched to a semi-transparent state so that only part of the ambient light irradiates the driving switches 130 to meet different requirements.

[0031] In the embodiment of the present application, the control module 210 enables the driving switch 130 to enter the driving stage or the light-sensing stage, and the switching module 220 is used to control the light transmittance of the electrochromic layer 140. When the display panel 100 is normally displaying, the driving switch 130 enters the driving stage, the electrochromic layer 140 is switched to an opaque state, and the driving switch 130 is not affected by ambient light and can normally drive the corresponding pixel; when the display panel 100 needs to detect ambient light to adjust the screen brightness according to the ambient light brightness, the driving switch 130 enters the light-sensing stage, and the electrochromic layer 140 is switched to at least a partially transparent state so that at least a part of the driving switches 130 can receive the ambient light transmitted through the electrochromic layer 140, detect the brightness of the ambient light according to the leakage current effect, and finally the dimming module 230 adjusts the brightness of the display panel 100 according to the detection result of the ambient light by the driving switch 130 in the light-sensing stage to achieve the effect of adaptive dimming. Through the above design, the driving switch 130 that originally drives pixels in the display panel 100 is directly reused as an ambient light sensor, and by adjusting the received signal of the driving switch 130, the state of the driving switch 130 is switched, so that the driving switch 130 can not only drive pixels but also detect the ambient light brightness, thus eliminating the need to additionally install an ambient light sensor in the display panel 100, thereby not reducing the screen-to-body ratio of the display panel 100 and avoiding reducing the aperture ratio of the display panel 100.

[0032] In this embodiment, the electrochromic layer 140 is an integral layered structure that simultaneously covers all the driving switches 130 in the entire display area. At this time, the switching module 220 adjusts the electrochromic layer 140 to a transparent state that is the same everywhere. When the driving switch 130 enters the driving stage, the switching module 220 switches the entire electrochromic layer 140 to an opaque state; when the driving switch 130 enters the photosensitive stage, the switching module 220 switches the entire electrochromic layer 140 to a transparent state. Through this design, it is convenient to control the electrochromic layer 140. At the same time, when photosensitive detection is required, since the entire electrochromic layer 140 is switched to a transparent state, each driving switch 130 can receive ambient light from all directions in the front, ensuring that the ambient light received by each driving switch 130 is similar or even the same, thereby improving the detection accuracy.

[0033] In this embodiment, when photosensitive detection is required, the switching module 220 can control all the driving switches 130 in the display area to enter the photosensitive stage, or only control some of the driving switches 130 in the display area to enter the photosensitive stage. Specifically, it can be selected according to the actual situation and will not be limited here.

[0034] As a specific implementation manner, the dimming module 230 is connected to all the driving switches 130 at the same time. When photosensitive detection is required, the switching module 220 controls all the driving switches 130 in the display area to enter the photosensitive stage. The dimming module 230 detects the ambient light brightness according to the current output by all the driving switches 130 during photosensitive detection. Specifically, it uses the average value of the current output by all the driving switches 130 to detect the ambient light brightness, and then calculates the adjustment magnitude of the data current to avoid the situation of abnormal dimming caused by the abnormality of individual driving switches 130.

[0035] As Figure 3 shown, in some embodiments, the driving circuit 200 further includes a gate driving circuit 240 and a source driving circuit 250. The gate driving circuit 240 is connected to the scanning line 120, and the source driving circuit 250 is respectively connected to the data line 110, the control module 210, and the dimming module 230. When the driving switch 130 enters the driving stage, the gate driving circuit 240 outputs a scanning signal to the scanning line 120, and the source driving circuit 250 outputs a data signal to the data line 110; when the driving switch 130 enters the photosensitive stage, the gate driving circuit 240 outputs a scanning signal to the scanning line 120, and the source driving circuit 250 outputs a blank signal to the data line 110.

[0036] It can be understood that regardless of whether the driving switch 130 enters the driving stage or the photosensitive stage, the gate driving circuit 240 outputs a control signal to the gate of the driving switch 130 to turn on the driving switch 130; when the driving switch 130 enters the driving stage, the source driving circuit 250 inputs a data signal to the source of the driving switch 130, so that the driving switch 130 controls the pixel to emit light; when the driving switch 130 enters the photosensitive stage, the source driving circuit 250 does not input any signal to the source of the driving switch 130. At this time, the photocurrent generated by the driving switch 130 under illumination is transmitted to the source driving circuit 250 and the dimming module 230 through the original data line 110, so that the dimming module 230 obtains the detection result of the driving switch 130, and then adjusts the magnitude of the subsequent data current to achieve the purpose of dimming the display panel 100. Through the above design, the embodiment of the present application does not change the connection design between the driving switch 130 and the gate driving circuit 240 and the source driving circuit 250 in the display panel 100. By multiplexing the data line 110, it does not increase the additional wiring design for the driving switch 130, thereby avoiding the problem of reducing the display aperture ratio due to the increase of wiring in the display area.

[0037] In some embodiments, the dimming module 230 can also be connected to the source or drain of the driving switch 130 by adding new traces in the display panel 100.

[0038] As Figure 4 shown, when the display panel 100 is in normal display, there will be a blank stage b (blank area) between two adjacent display frames a, which can also be understood as a frame interval. Specifically, the clock signal CLK is a waveform signal in the display frame a and a low-level signal in the blank stage b; the reset signal Reset is a low-level signal in the display frame a and a high-level signal in the blank stage b; the data signal Source is a low-voltage signal in both the display frame a and the blank stage b; the electrochromic layer voltage ALS is a low-level signal in the display frame a and a high-level signal in the blank stage b, so as to switch to a transparent state in the blank stage b.

[0039] The embodiment of the present application utilizes this time period to make the driving switch 130 enter the photosensitive stage in the blank stage and enter the driving stage in the display frame through the control module 210. Since the embodiment of the present application locates the photosensitive stage in the blank stage between two adjacent frames, at this time, the gate driving circuit 240 controls the driving switch 130 to open, the source driving circuit 250 stops inputting signals to the driving switch 130, and the switching module 220 switches the electrochromic layer 140 to a transparent state. By setting like this, it is not necessary to change the display effect of the picture, and the ambient light brightness can be detected once between every two display frames, achieving the effect of real-time monitoring and real-time adjustment of the brightness of the display panel 100, thereby improving the dimming accuracy and dimming efficiency.

[0040] In other embodiments, the photosensitive stage may also be located within the display frame. Since there are a very large number of display frames per second, if only one display frame is modified, the human eye will not notice, thus not affecting the display effect.

[0041] In some embodiments, the photosensitive detection can be turned on at intervals, such as 1 s, 2 s, etc. It is not necessary to perform light detection for each frame, thereby reducing the computational load of the display device 10.

[0042] The embodiment of the present application can also flexibly switch the photosensitive stage to the blank stage or the display frame through the control module 210, so as to improve the environmental light adaptability while realizing more diversified light sensing functions and improving the applicability of the display device 10. For example, in some embodiments, when the environmental light brightness is high, the photosensitive stage can be switched to the blank stage. At this time, since the environmental light has a greater impact on the driving switch 130, switching the photosensitive stage to the blank stage will not affect the normal display of the display panel 100; or, when the environmental light brightness is weak or not obvious, the photosensitive stage is switched to the blank stage. At this time, the display panel 100 does not emit light, and the driving switch 130 is more sensitive to the detection of environmental light, thereby improving the detection accuracy; or, when the environmental light changes greatly or is obvious, the photosensitive stage is switched into the display frame, avoiding the detection of environmental light and dimming calculation in the blank stage, thereby saving the power consumption of the display device 10.

[0043] In some embodiments, it is also possible to identify the time with large inter-frame differences (between two frames with large differences such as transitions in the video) or a pure black screen by caching and analyzing the video data voltage in a future time period (application scenario of playing video), through methods such as pre-caching, data chunking, or solid color screen detection, and then insert the photosensitive stage, so as to reduce the impact on the human perception to a very small extent.

[0044] As Figure 5 shown, the embodiment of the present application also provides a driving method for a display device, used to drive the display device 10 as described above. The driving method includes: Display step: The driving switch receives a data signal, drives the corresponding pixel, and the switching module switches the electrochromic layer to an opaque state; Detection step: The driving switch receives a blank signal, and the switching module switches the electrochromic layer to at least partially transparent state; Dimming step: The dimming module adjusts the data signal output to the data line according to the current signal output by the driving switch in the detection step.

[0045] In the embodiment of the present application, by multiplexing the driving switch 130 as an ambient light sensor, the screen occupation ratio of the display panel 100 is saved, and by dynamically inserting the photosensitive stage into the display frame or the blank stage, the user's flicker perception is greatly reduced, thereby improving the display effect of the panel. Compared with the traditional external light sensor solution or the solution of separately arranging the light sensor in the panel border area, the technical solution of the present application can reduce the production cost of the display device 10, and also has the advantages of timeliness, precision, and more diversified ambient light intensity detection, etc., and can better adapt to the design of multi-scene dimming optimization, greatly improving the market competitiveness of the display device 10 in the present application.

[0046] As Figure 6 shown, as the display device provided in the second embodiment of the present application, compared with the first embodiment, the electrochromic layer 140 in this embodiment adopts a multi-strip design. Specifically, the electrochromic layer 140 includes a plurality of electrochromic strips 141, the length direction of the electrochromic strips 141 is the same as the length direction of the scanning line 120, and each electrochromic strip 141 covers one row of the driving switches 130, so that one electrochromic strip 141 controls the photosensing of one row of driving switches 130. Through the above design, the state of each electrochromic strip 141 can be separately regulated to meet more detection requirements. Moreover, the electrochromic strip 141 can also be used for other functional designs. For example, when the width of each electrochromic strip 141 is close to or equal to the width of the pixel, if a certain pixel or a certain row of pixels in the display panel 100 abnormally emits white light, the electrochromic strip 141 above this row of pixels can be adjusted to an opaque state, so that the pixels in this row do not emit light, achieving a repair effect.

[0047] In some embodiments, the width of the electrochromic strip 141 is less than the width of the pixel, equal to or slightly greater than the width of the driving switch 130. At this time, the electrochromic strip 141 only covers the driving switch 130, and does not cover the redundant pixel area, thereby avoiding too much light passing through the electrochromic strip 141 and causing light loss problems.

[0048] In some embodiments, the switching module 220 is integrated in the gate driving circuit 240 to reduce the occupied space of the switching module 220 in the display panel 100 and facilitate circuit design. Of course, in other embodiments, the switching module 220 can also be independently arranged in the border area of the display panel 100.

[0049] Furthermore, as Figure 7As shown, the gate driving circuit 240 includes a plurality of gate driving units 241, and the switching module 220 includes a plurality of switching units 221. Each switching unit 221 drives a corresponding electrochromic strip 141 to independently control the light transmittance of each electrochromic strip 141.

[0050] Moreover, the switching units 221 are integrally corresponding in the corresponding gate driving units 241. When the gate driving unit 241 outputs a scanning signal to the corresponding row scanning line 120, the switching unit 221 simultaneously outputs a switching signal to the electrochromic strips 141 in the same row to control the light transmittance of the electrochromic strips 141. Through the above design, when the gate driving unit 241 turns on the driving switch 130 of each row, the switching unit 221 also controls the electrochromic strips 141 in the same row, enabling the control of both to be carried out simultaneously, so as to achieve the control of the electrochromic strips 141 without affecting the normal display of the picture.

[0051] As Figure 8 shown, in some embodiments, the plurality of electrochromic strips 141 include a first electrochromic strip 142 and a second electrochromic strip 143, that is, one or more of the electrochromic strips 141 in the electrochromic layer 140 are the first electrochromic strip 142, and one or more of the electrochromic strips 141 are the second electrochromic strip 143. When the driving switch 130 enters the photosensitive stage, the switching module 220 switches the first electrochromic strip 142 to a fully transparent state, and the switching module 220 switches the second electrochromic strip 143 to an opaque state; the dimming module 230 adjusts the data signal output to the data line 110 according to the current signals output by the driving switches 130 under the first electrochromic strip 142 and the current signals output by the driving switches 130 under the second electrochromic strip 143.

[0052] Since the photosensor or the driving switch 130 is also affected by conditions such as temperature when sensing the ambient light, resulting in a deviation in the detection result of the ambient light intensity. Based on this, in the embodiment of the present application, in the photosensitive state, a part of the first electrochromic strips 142 above the driving switches 130 are controlled to be switched to a fully transparent state, so that this part of the driving switches 130 can receive the ambient light, and at the same time, another part of the second electrochromic strips 143 above the driving switches 130 are controlled to be switched to an opaque state, so that this part of the driving switches 130 cannot receive the ambient light. Finally, the dimming module 230 obtains an accurate ambient light detection result according to the difference detected by these two parts of the driving switches 130, thereby providing the detection accuracy of the ambient light intensity.

[0053] Further, the first electrochromic strip 142 and the second electrochromic strip 143 are arranged adjacent to each other. Since the chip, circuit, or some components of the display device 10 generate heat during long-term operation, the temperatures at various locations on the display panel 100 are not uniform. To prevent the driving switches 130 below the first electrochromic strip 142 and the second electrochromic strip 143 from being at different temperatures, in the embodiment of the present application, the first electrochromic strip 142 and the second electrochromic strip 143 are arranged adjacent to each other to reduce the distance between the first electrochromic strip 142 and the second electrochromic strip 143, and further reduce the distance between the driving switch 130 below the first electrochromic strip 142 and the driving switch 130 below the second electrochromic strip, thereby reducing the problem of deviation in the detection result caused by the different temperatures of the driving switches 130.

[0054] As Figure 9 shown, in some embodiments, the plurality of electrochromic strips 141 include a first electrochromic strip 142, a second electrochromic strip 143, and a third electrochromic strip 144. When the driving switch 130 enters the photosensitive stage, the switching module 220 switches the first electrochromic strip 142 to a fully transparent state, the switching module 220 switches the second electrochromic strip 143 to an opaque state, and the switching module 220 switches the third electrochromic strip 144 to a semi-transparent state; the dimming module 230 adjusts the data signal output to the data line 110 according to the current signals output by the driving switches 130 below the first electrochromic strip 142, the current signals output by the driving switches 130 below the second electrochromic strip 143, and the current signals output by the driving switches 130 below the third electrochromic strip 144.

[0055] Compared with the design with only one set of control detections, the embodiment of the present application adopts a two-set control detection design, that is, the embodiment of the present application comprehensively detects the ambient light intensity according to the driving switches 130 in three states. In the photosensitive stage, the first part of the driving switches 130 can receive all the ambient light because the first electrochromic strip 142 above is switched to a fully transparent state; the second part of the driving switches 130 cannot receive the ambient light because the second electrochromic strip 143 above is switched to an opaque state; the third part of the driving switches 130 can only receive half or part of the ambient light because the third electrochromic strip 144 above is switched to a semi-transparent state. The embodiment of the present application uses the difference in photocurrent magnitude of these three parts of the driving switches 130 to calibrate the temperature influence and eliminate the internal circuit noise interference of the panel, and increase the accuracy of the contrast light-sensing signal calibration.

[0056] Further, the first electrochromic strip 142, the second electrochromic strip 143, and the third electrochromic strip 144 are arranged adjacent to each other to reduce the deviation problem of the detection result caused by uneven temperature in the display panel 100.

[0057] Of course, in other embodiments, the electrochromic layer 140 can also adopt a block or other shaped design, which can be specifically selected according to the actual situation and is not limited herein.

[0058] As Figure 10 shown, as the display device 10 provided in the third embodiment of the present application, compared with the first embodiment, the electrochromic layer 140 includes a plurality of electrochromic strips 141, the length direction of the electrochromic strips 141 is the same as the length direction of the data line 110, and each electrochromic strip 141 covers one column of the driving switches 130. The embodiments of the present application can regulate the light transmittance above each column of driving switches 130 to meet the light sensing requirements in different directions.

[0059] For the specific design of the electrochromic strip 141, reference can be made to the description in the second embodiment, and details will not be elaborated herein.

[0060] In the embodiments of the present application, the switching module 220 can be located in the border area of the display panel 100 and is disposed opposite to the source driving circuit 250. At this time, the connection line between the switching module 220 and the electrochromic strip 141 is located in the fan-out area on one side of the display panel 100, and the connection line between the source driving circuit 250 and the data line 110 is located in the fan-out area on the other side of the display panel 100, avoiding the problem that too many traces in the fan-out area on the same side of the source driving circuit 250 cause the border size to become larger.

[0061] It should be noted that the limitations on the steps involved in this solution do not, on the premise of not affecting the implementation of the specific solution, determine the order of the steps. The steps written in the front can be executed first, or can be executed later, or even can be executed simultaneously. The solutions of different embodiments can be combined and applied without conflict as long as the solution can be implemented, and all should be regarded as belonging to the protection scope of the present application.

[0062] The above content is a further detailed description of the present application in combination with specific optional implementation manners. It cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. A display device, comprising a display panel and a driving circuit for driving the display panel, the display panel including a plurality of data lines and a plurality of scan lines, the plurality of data lines and the plurality of scan lines defining a plurality of pixel regions, wherein, The display panel includes: A plurality of driving switches, each of the plurality of driving switches is disposed in a corresponding pixel region and is connected to a corresponding data line and a scanning line; and An electrochromic layer disposed on at least some of the driving switches for controlling the amount of received light of the corresponding driving switches; The driving circuit includes: A control module connected to the driving switches to control the driving switches to enter a driving stage or a photosensitive stage; A switching module connected to the electrochromic layer and the control module to control the light transmittance of the electrochromic layer according to the stage where the driving switches are located; and A dimming module connected to the driving switches to adjust the data signal output to the data line according to the current signal output by the driving switches in the photosensitive stage; Wherein, when the driving switches enter the driving stage, the driving switches receive data signals to drive corresponding pixels, and the switching module switches the electrochromic layer to an opaque state; when the driving switches enter the photosensitive stage, the driving switches receive blank signals, and the switching module switches the electrochromic layer to at least partially transparent state, and the corresponding driving switches receive ambient light.

2. The display device according to claim 1, wherein The driving circuit includes a gate driving circuit and a source driving circuit, the gate driving circuit is connected to the scanning line, and the source driving circuit is respectively connected to the data line, the control module and the dimming module; When the driving switches enter the driving stage, the gate driving circuit outputs a scanning signal to the scanning line, and the source driving circuit outputs a data signal to the data line; when the driving switches enter the photosensitive stage, the gate driving circuit outputs a scanning signal to the scanning line, and the source driving circuit outputs a blank signal to the data line.

3. The display device according to claim 2, characterized in that, The electrochromic layer includes a plurality of electrochromic strips, the length direction of the electrochromic strips is the same as the length direction of the scanning line, and each electrochromic strip covers one row of the driving switches; The switching module is integrated in the gate driving circuit.

4. The display device according to claim 3, wherein, The gate driving circuit includes a plurality of gate driving units, the switching module includes a plurality of switching units, each switching unit drives a corresponding electrochromic strip, and the switching units are integrated in the gate driving units one by one. When the gate driving unit outputs a scanning signal to the corresponding row of scanning lines, the switching unit simultaneously outputs a switching signal to the electrochromic strips of the same row to control the light transmittance of the electrochromic strips.

5. The display device according to claim 2, characterized in that, The electrochromic layer includes a plurality of electrochromic strips, the length direction of the electrochromic strips is the same as the length direction of the data line, and each electrochromic strip covers one column of the driving switches.

6. The display device according to claim 3 or 5, characterized in that, The plurality of electrochromic strips include a first electrochromic strip and a second electrochromic strip. When the driving switches enter the photosensitive stage, the switching module switches the first electrochromic strip to a fully transparent state, and the switching module switches the second electrochromic strip to an opaque state; The dimming module adjusts the data signal output to the data line according to the current signals output by the driving switches under the first electrochromic strip and the second electrochromic strip.

7. The display device according to claim 6, wherein The first electrochromic strip and the second electrochromic strip are arranged adjacent to each other.

8. The display device according to claim 3 or 5, characterized in that, The multiple electrochromic strips include a first electrochromic strip, a second electrochromic strip, and a third electrochromic strip. When the driving switch enters the photosensitive stage, the switching module switches the first electrochromic strip to a fully transparent state, the switching module switches the second electrochromic strip to an opaque state, and the switching module switches the third electrochromic strip to a semi-transparent state; The dimming module adjusts the data signal output to the data line according to the current signals output by the driving switches under the first electrochromic strip, the second electrochromic strip, and the third electrochromic strip.

9. The display device according to claim 1, characterized in that, The photosensitive stage is located in the blank stage between two adjacent frames of images.

10. A driving method for a display device, for driving the display device according to any one of claims 1-9, characterized in that, The driving method includes: Display step: The driving switch receives the data signal, drives the corresponding pixel, and the switching module switches the electrochromic layer to an opaque state; Detection step: The driving switch receives the blank signal, and the switching module switches the electrochromic layer to at least a partially transparent state; Dimming step: The dimming module adjusts the data signal output to the data line according to the current signal output by the driving switch in the detection step.

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