CN113946241A

CN113946241A - Display panel and display terminal

Info

Publication number: CN113946241A
Application number: CN202111175943.4A
Authority: CN
Inventors: 崔巍
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-01-18

Abstract

The present application relates to a display panel and a display terminal, wherein the display panel includes a plurality of display modules, at least one the display module includes: a display unit including a first storage capacitor; the light-operated sensing unit comprises a second storage capacitor and is electrically connected with the display unit; wherein all or part of the first storage capacitor is shared with the second storage capacitor. The whole or part of the first storage capacitor of the display unit is shared with the second storage capacitor of the light-operated sensing unit, the number of electrodes in the first storage capacitor and the second storage capacitor can be reduced, the size of a black matrix is further shortened, the penetration rate and the aperture opening rate of the display panel are improved, and the problem of black lines of the display panel during picture display is solved.

Description

Display panel and display terminal

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display terminal.

Background

With the development of the times, displays have become more and more popular. With the advent of the 5G era, display devices having an interactive function have been receiving more and more attention. In addition to conventional near touch functionality, more and more application scenarios require remote touch functionality. For example, in a large conference room or classroom, a lecturer can mark or write on a screen through a remote laser pen instead of a finger, so that interaction efficiency and convenience are improved.

For a display, in order to save cost, the photosensitive device needs to be fabricated on an Array (i.e., Array) substrate or a color film (i.e., CF) substrate and packaged inside the display. Such a design reduces the cost, but the introduction of the sensor also reduces the aperture ratio and the transmittance of the display portion, while reducing the resolution of the display. In order to solve the problems, a method for enhancing the backlight intensity can be adopted, but the cost of the whole machine is increased by enhancing the backlight intensity, and meanwhile, the power consumption of the display is increased, so that the remote light-sensing touch display can only be applied to some lower-end scenes, and the application range is limited.

Disclosure of Invention

In view of this, the present disclosure provides a display panel and a display terminal, which can reduce the number of electrodes in the first storage capacitor and the second storage capacitor, thereby reducing the size of the black matrix, increasing the transmittance and the aperture ratio of the display panel, and improving the black line problem of the display panel when displaying the image.

According to an aspect of the present application, there is provided a display panel including a plurality of display modules, at least one of the display modules including: a display unit including a first storage capacitor; the light-operated sensing unit comprises a second storage capacitor and is electrically connected with the display unit; wherein all or part of the first storage capacitor is shared with the second storage capacitor.

Further, the display unit in at least one of the display modules further includes a first switching transistor, and the photo sensing unit in at least one of the display modules further includes a second switching transistor and a photo transistor, and the second switching transistor is electrically connected to the photo transistor.

Furthermore, at least one display module is a laminated structure, and an array substrate, a gate insulating layer, a passivation layer, a liquid crystal layer and a color film substrate are sequentially laminated in each laminated structure.

Further, in at least one of the display modules, a black matrix is disposed on a side of the color filter substrate facing the array substrate, and an orthogonal projection range of the black matrix of the display module on the array substrate is associated with an orthogonal projection range of the second switching transistor of the display module on the array substrate.

Further, the first switch transistor, the second switch transistor and the photo transistor in at least one of the display modules each include an active layer corresponding to the transistor, wherein the at least one active layer is disposed on a side of the gate insulating layer facing away from the array substrate and in the passivation layer.

Further, the second storage capacitor in at least one of the display modules comprises a first electrode and a second electrode, wherein at least one of the first electrodes is arranged on one side of the array substrate facing the liquid crystal layer and is positioned in the gate insulating layer; at least one second electrode is arranged on one side, away from the array substrate, of the grid electrode insulating layer and is located in the passivation layer.

Further, the first electrode and the second electrode of at least one of the second storage capacitors are oppositely arranged along a direction perpendicular to the array substrate, wherein a projection center of the first electrode of the at least one of the second storage capacitors on the array substrate coincides with a projection center of the second electrode on the array substrate.

Further, the grid electrode of the first switch transistor, the grid electrode of the second switch transistor and the grid electrode of the light sensing transistor in at least one display module are all arranged on one side, facing the liquid crystal layer, of the array substrate and located in the grid electrode insulating layer.

Further, a third electrode is arranged in at least one of the display modules, and at least one of the third electrodes is arranged on one side of the passivation layer, which faces away from the array substrate.

According to another aspect of the present application, there is provided a display terminal including a terminal body and the display panel, the terminal body being connected with the display panel.

By sharing all or part of the first storage capacitor of the display unit with the second storage capacitor of the light-operated sensing unit, the number of electrodes in the first storage capacitor and the second storage capacitor can be reduced according to the aspects of the application, the size of a black matrix is further shortened, the penetration rate and the aperture opening rate of the display panel are improved, and the problem of black lines of the display panel during picture display is solved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic diagram illustrating a structure of a display panel and a display screen in the related art.

Fig. 2 illustrates a cross-sectional view of a related art display panel structure.

Fig. 3 illustrates a top view of a related art display panel structure.

Fig. 4 shows a cross-sectional view of a display panel structure of an embodiment of the present application.

Fig. 5 shows a top view of a display panel structure according to an embodiment of the present application.

Fig. 6 shows a schematic diagram of a circuit of a light-operated sensing unit according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

As shown in fig. 1, the left half represents a structural diagram of the display panel 11 in the related art. The display panel 11 may be a remote optical touch display panel, 111 may be a backlight, 112 may be an array substrate, 113 may be a color film substrate, and 12 may be a laser pen. A red color set unit (i.e., R), a green color set unit (i.e., G), a blue color set unit (i.e., B), a photo Sensor unit (i.e., Sensor), and a black matrix (i.e., BM) are disposed between the array substrate 112 and the color filter substrate 113. Each color group unit is transparent to light, and the portion (e.g., metal traces in the photo sensor unit) blocked by the black matrix is not transparent to light.

Specifically, in fig. 1, because the light sensing portion in the light control sensing unit is provided with some metal wires or display materials, a black matrix needs to be introduced as a light shielding layer to shield the light sensing portion, so as to improve the quality of the display during displaying. However, the introduction of the black matrix greatly reduces the aperture ratio and the transmittance of the display, and if the width and the density of the black matrix are not appropriate, a black line visible to the naked eye as shown in the right half display frame 13 of fig. 1 is generated, so that the application scene of the remote optical touch display is limited.

As shown in fig. 2, the display panel may be cut along a fixed section line in the display panel in the related art, so as to obtain a cross-sectional view of the display panel structure in fig. 2. Fig. 2 of the related art shows the structure of the display panel more specifically than fig. 1. Referring to fig. 2, in the related art display panel, an array substrate 21, a gate insulating layer 22, a passivation layer 23, a liquid crystal layer 24, and a color filter substrate 25 are sequentially stacked.

Referring to fig. 2, in the related art, a display panel includes a display unit and a light control sensing unit. The display unit includes a transistor 26 and a first storage capacitor, and the electrode 221 can be used as one of the plates of the first storage capacitor; the photo sensing unit comprises a transistor 27, a transistor 28 and a second storage capacitor, and the electrode 222 may serve as one of the plates of the second storage capacitor. Therefore, the first storage capacitor of the display unit and the second storage capacitor of the photo sensor unit in the related art are separately disposed and independent of each other.

Further, referring to fig. 2, in the related art, on a side of the color filter substrate facing the array substrate, black matrixes (i.e., BMs) 252 and 253 are disposed to block light. It can be seen that, in the related art, since a larger space is required to place the first storage capacitor of the display unit and the second storage capacitor of the photo-control sensing unit, a black matrix is required to shield a portion where the first storage capacitor and the second storage capacitor are placed, so that the aperture ratio and the transmittance of the display panel are reduced.

Further, referring to fig. 2, in the related art, on a side of the array substrate (i.e., TFT Glass)21 facing the liquid crystal layer, 3 Gate electrodes (i.e., gates) are provided; on a side of the gate insulating layer (i.e., GI)22 facing away from the array substrate, 3 active layers (i.e., a-Si) each having a source electrode S and a drain electrode D disposed thereon, and source electrodes (i.e., S) and drain electrodes (D) are disposed. In addition, on the side of the passivation layer 23 facing away from the array substrate, an ITO electrode 251 is disposed, and the ITO electrode 251 may extend to a position right above the electrode 221.

Fig. 3 illustrates a top view of a related art display panel structure.

Referring to fig. 3, a top view of a display panel structure can be obtained by looking down a plurality of the structures of fig. 2. In fig. 3, the display panel in the related art may include a plurality of pixel units, the display unit 32 may be a display portion in any one of the plurality of pixel units, and the photo sensor unit 31 may be a photo sensor portion in any one of the plurality of pixel units. It can be seen that the light control sensing unit 31 is blocked by the black matrix. It should be noted that since the light-transmitting area occupied by the transistor 27 is very small, fig. 3 sets the photo sensor cell 31 to be completely black, which means that the area of the black matrix is large, and in fact the transistor 27 can receive light, for example, the transistor 27 is a photo transistor.

As the structures shown in fig. 1 to 3 are adopted in the related art, the transmittance and the aperture ratio of the remote optical touch display are low, and the remote optical touch display is easily affected by the black matrix, which causes a black line problem affecting a display screen, and limits an application scenario of the remote optical touch display.

In view of the above, the present application provides a display panel including a plurality of display modules, at least one of the display modules including: a display unit including a first storage capacitor; the light-operated sensing unit comprises a second storage capacitor and is electrically connected with the display unit; wherein all or part of the first storage capacitor is shared with the second storage capacitor. The whole or part of the first storage capacitor of the display unit is shared with the second storage capacitor of the light-operated sensing unit, the number of the electrodes in the first storage capacitor and the second storage capacitor can be reduced, the size of a black matrix is further shortened, the penetration rate and the aperture opening rate of the display panel are improved, and the problem of black lines of the display panel during picture display is solved.

As shown in fig. 4, the embodiment of the present application may cut the display panel along a fixed section line in the display panel, so as to obtain a cross-sectional view of the display panel structure in fig. 4. Referring to fig. 4, the display panel of the embodiment of the present application includes a plurality of display modules, and at least one of the display modules includes: a display unit including a first storage capacitor; the light-operated sensing unit comprises a second storage capacitor and is electrically connected with the display unit; wherein all or part of the first storage capacitor is shared with the second storage capacitor.

Specifically, as shown in fig. 4, one of the display modules may include the entire structure shown in fig. 4. It should be noted that the display module in the embodiment of the present application is for convenience of discussion of the drawn concept, and may not exist in an actual display panel. In the embodiment of the present application, one display module may include the entire structure shown in fig. 4. It can be understood that other parts such as metal traces may also be disposed in the display module in the embodiment of the present application, and the representation range of the display module in the present application is not limited.

Further, the display panel according to the embodiment of the present application may include a plurality of display modules, and the plurality of display modules may be arranged in an array. Each of the display modules may include a display unit and a light control sensing unit. In addition, the display panel of the embodiment of the present application may further include a plurality of pixel units, and one of the pixel units may correspond to one of the display units. The display unit in one of the display modules can be used for driving the corresponding pixel unit so as to control whether the pixel unit emits light, the intensity of the emitted light and the like; the plurality of light control sensing units may be used to implement a light control function of the display panel.

Further, referring to fig. 4, at least one of the display modules is a stacked structure, and an array substrate 41, a gate insulating layer 42, a passivation layer 43, a liquid crystal layer 44, and a color filter substrate 45 are sequentially stacked in each stacked structure. It is understood that the stacked structure of fig. 4 is an example, and the stacked structure of fig. 4 may be variously modified in practical application, and the present application is not limited to the stacked structure of at least one of the display modules.

The array substrate 41 may be a Glass substrate (also referred to as TFT-Glass) for supporting a Thin Film Transistor (TFT). An underlayer (not shown) may be further disposed on a surface of the array substrate 41 opposite to the color filter substrate 45.

Further, the Color Filter substrate 45 may be a Glass substrate (also referred to as CF-Glass) for supporting a Color Filter (CF). The color filter can comprise a red color set unit, a green color set unit and a blue color set unit which are respectively used for filtering light rays with different wave bands, thereby realizing color liquid crystal display.

Further, Liquid Crystal (LC) may be filled in the Liquid Crystal layer 44, that is, the Liquid Crystal may be filled between the passivation layer 43 and the color filter substrate 45.

Further, the display unit in at least one of the display modules further includes a first switching transistor, and the photo sensing unit in at least one of the display modules further includes a second switching transistor and a photo transistor, and the second switching transistor is electrically connected to the photo transistor. Referring to fig. 4, the display unit in at least one of the display modules may include a first switching transistor 46 and a first storage capacitor; the photo sensing unit in at least one of the display modules may include a second switching transistor 48, a photo transistor 47, and a second storage capacitor. In the display module of the embodiment of the present application, the numbers of the first switch transistor, the second switch transistor and the photo transistor may be respectively set to be plural. It is to be understood that the number of transistors in the display unit and the photo sensor unit is not limited in the present application.

Further, the display panel may include a plurality of pixel units arranged in rows and columns, and each of the pixel units may be provided with a display unit corresponding to the pixel unit for driving the pixel unit to emit light. It is noted that a pixel electrode may be further disposed in each pixel unit, wherein a capacitance formed between the pixel electrode and the liquid crystal may be equivalent to a liquid crystal capacitance. That is, each of the display units may include a liquid crystal capacitor in addition to the first storage capacitor. Since the liquid crystal capacitance is not related to the embodiments of the present application, further description is not needed here.

It should be noted that the display panel may further include a plurality of scan lines and a plurality of data lines. One scanning line can control the working states of all the first switch transistors corresponding to a row of pixel units; the drain of the first switching transistor corresponding to each pixel unit can be connected to a data line, and different data on the data line can be written into different pixel units, so that liquid crystal display with different gray scales can be realized.

Furthermore, the photo transistor can be used for generating a carrier in a channel of the photo transistor according to light irradiation and sending the carrier to a reading line so as to be convenient for an external processor to detect, thereby realizing a light control function. In fig. 4, the photo transistor 47 is not blocked by the black matrix, so that light can reach the channel of the photo transistor to generate carriers.

Further, the second switch transistor may be electrically connected to the photo transistor for controlling an operating state of the photo transistor. For example, in the case where the second switching transistor is turned off, the photo sensing transistor may also be in an off state.

Further, the first switch transistor, the second switch transistor and the photo transistor in at least one of the display modules each include an active layer corresponding to the transistor, wherein the at least one active layer is disposed on a side of the gate insulating layer facing away from the array substrate and in the passivation layer. For example, in fig. 4, the active layer 431 of the first switching transistor, the active layer 432 of the photo transistor, and the active layer 433 of the second switching transistor may be disposed on a side of the gate insulating layer facing away from the array substrate and in the passivation layer.

At least one of the active layers can be made of photosensitive material, such as hydrogenated amorphous silicon (α -Si: H), organic small molecules, polymer semiconductor or metal oxide semiconductor which can sense the wavelength of the corresponding laser pointer. Preferably, the material adopted by at least one active layer can be hydrogenated amorphous silicon (alpha-Si: H), the alpha-Si: H material has high light absorptivity, large temperature coefficient of resistance and controllable forbidden band width, and can be formed into a film in a large area at a low temperature, and the production process is simple. It is to be understood that the active layer materials of the first switching transistor, the second switching transistor and the photo transistor may be different, and the application is not limited to the materials used for the active layer.

Further, the grid electrode of the first switch transistor, the grid electrode of the second switch transistor and the grid electrode of the light sensing transistor in at least one display module are all arranged on one side, facing the liquid crystal layer, of the array substrate and located in the grid electrode insulating layer. For example, in fig. 4, the gate 421 of the first switching transistor, the gate 423 of the second switching transistor, and the gate 422 of the photo transistor are disposed on the side of the array substrate facing the liquid crystal layer and in the gate insulating layer.

It should be noted that, in at least one of the display modules according to the embodiments of the present application, all or part of the first storage capacitor is shared by the second storage capacitor, so that the first storage capacitor and the second storage capacitor may be the same capacitor in a physical layer. That is, the first storage capacitor in at least one of the display modules may include a fourth electrode and a fifth electrode, wherein the fourth electrode is identical to the first electrode, and the fifth electrode is identical to the second electrode. It is to be understood that such differences in expression do not affect the inventive spirit of the present application.

For example, in fig. 4, the first electrode 424 and the second electrode 430 may be two electrodes in the first storage capacitor or two electrodes in the second storage capacitor, that is, the first electrode 424 and the second electrode 430 may serve as two plates of the first storage capacitor or the second storage capacitor.

Further, the first electrode of at least one of the display modules may be disposed between the gate of the second switching transistor and the gate of the photo transistor. For example, in FIG. 4, a first electrode 424 is disposed between the gate 422 of the photo transistor and the gate 423 of the second switching transistor.

Compared with the structure of the display panel in the related art, the display panel has the advantages that the whole or part of the first storage capacitor of the display unit is shared with the second storage capacitor of the light-operated sensing unit, the number of electrodes can be reduced, the size of a black matrix is further shortened, the penetration rate and the aperture opening rate of the display panel are improved, and the problem of black lines of the display panel during image display is solved.

Further, each of the first storage capacitor and the second storage capacitor in at least one of the display modules includes two electrodes, one electrode of the first storage capacitor is shared with one electrode of the second storage capacitor, and the other electrode of the first storage capacitor is not shared with the other electrode of the second storage capacitor. That is, the first storage capacitor and the second storage capacitor share only one electrode. That is, both plates of the first storage capacitor may be shared with both plates of the second storage capacitor, or one plate of the first storage capacitor may be shared with one plate of the second storage capacitor. It is understood that, in the implementation process, there may be many variations on how the first storage capacitor and the second storage capacitor are shared, and the embodiment of the present application is not limited to how the first storage capacitor and the second storage capacitor are specifically shared.

Further, the first electrode and the second electrode of at least one of the second storage capacitors are oppositely arranged along a direction perpendicular to the array substrate, wherein a projection center of the first electrode of the at least one of the second storage capacitors on the array substrate coincides with a projection center of the second electrode on the array substrate. For example, in fig. 4, the projection centers of the first electrode 424 and the second electrode 430 on the array substrate respectively coincide, where the projection center may be the geometric center of the projection of the first electrode or the second electrode on the array substrate, which can reduce the generation of parasitic capacitance and improve the stability of the circuit.

Further, a third electrode is arranged in at least one of the display modules, and at least one of the third electrodes is arranged on one side of the passivation layer, which faces away from the array substrate. Referring to fig. 4, the third electrode 441 may be electrically connected to the drain electrode of the first switching transistor through a via hole. The third electrode 441 can be electrically connected to a metal trace, such as a data line, that is, a data signal on the data line can be sent to the drain of the first switching transistor through the third electrode 441. It is to be understood that the present application is not limited to the third electrode.

Further, each transistor in at least one of the display modules may further include a source and a drain. For example, in fig. 4, the first switch transistor may include a source 434 and a drain 435; the second switching transistor may include a source 438 and a drain 439; the photo transistor may include a source 436 and a drain 437. It should be noted that, in the above embodiments of the present application, the first switching transistor, the second switching transistor, and the photo transistor are all described by taking the respective transistors as N-type as an example, it is understood that the transistors may also include other types such as P-type, and the present application is not limited to the specific types of the first switching transistor, the second switching transistor, and the photo transistor.

Further, the second electrode 430 may be disposed between the source 438 of the second switching transistor and the drain 437 of the photo transistor, and electrically connected to the source 438 of the second switching transistor and the drain 437 of the photo transistor, respectively. The second electrode 430 may be made of the same material as the source 438 of the second switching transistor or the drain 437 of the photo transistor.

Further, in at least one of the display modules, a black matrix is disposed on a side of the color filter substrate facing the array substrate, and an orthogonal projection range of the black matrix of the display module on the array substrate is associated with an orthogonal projection range of the second switching transistor of the display module on the array substrate. Specifically, the orthographic projection range of the black matrix of the display module on the array substrate is the same as the orthographic projection range of the second switching transistor of the display module on the array substrate. Of course, the orthographic projection range of the black matrix of the display module on the array substrate may also be larger than the orthographic projection range of the second switching transistor of the display module on the array substrate, which is not limited in this application.

Referring to fig. 5, a top view of a display panel structure can be obtained by looking down a plurality of the structures of fig. 4. In fig. 5, the display panel may include a plurality of pixel units, the display unit 52 may be a display portion in any one of the plurality of pixel units, and the photo sensor unit 51 may be a photo sensor portion in any one of the plurality of pixel units.

As shown in fig. 5, in the embodiment of the present application, all or part of the first storage capacitor of the display unit is shared with the second storage capacitor of the photo sensor unit, so that the number of electrodes is reduced, a black matrix is not required to be used above the photo transistor for shielding, and the size of the black matrix is shortened, thereby increasing the transmittance and the aperture ratio of the display panel and improving the black line problem of the display panel when displaying a picture.

As shown in fig. 6, the photo sensor cell circuit includes a transistor T1, a transistor T2, a second storage capacitor C, a Gate line Gate, a first power signal line VDD, a second power signal line SVGG, and a read line Readout. The transistor T1 (i.e., the second switching transistor) may be a thin film transistor for switching, and the transistor T2 (i.e., the photo transistor) may be a thin film transistor for sensing light.

Referring to fig. 6, taking the types of the transistor T1 and the transistor T2 as N-type as an example, the Gate of the transistor T1 is electrically connected to the Gate line Gate, the source of the transistor T1 is electrically connected to the source of the transistor T2 and one end of the storage capacitor C to form an internal node, and the drain of the transistor T1 is electrically connected to the read line Readout; the drain of the transistor T2 is electrically connected to the first power supply signal line VDD, and the gate of the transistor T2 is electrically connected to the second power supply signal line SVGG and the other end of the storage capacitor.

When the photo-sensing unit operates, a low level may be input to the Gate of the transistor T1 from the Gate line Gate, the first power supply signal line VDD may be a high level, and the second power supply signal line SVGG may be a low level. When there is no light irradiation, both the transistor T1 and the transistor T2 are in an off state. When the light-operated sensing unit receives light emitted by a light source such as a laser pen, the transistor T2 senses that the light is in a conducting state, at this time, a high level can be input to the Gate of the transistor T1 through the Gate line Gate, so that the transistor T1 is also in a conducting state, the read line Readout can read a voltage value of an internal node, and the read line Readout can also send the read voltage value to the position detection unit for processing, thereby determining the specific position irradiated by the light.

Wherein, the voltage range of the SVGG may be set to-10V to 0V, and the voltage range of the VDD may be set to 0V to 15V.

It is understood that the circuit of the photo-sensing unit of the embodiments of the present application is exemplary. How to detect or determine the specific position of the light irradiation can be realized by various circuit structures, and the application is not limited to the specific structure of the photo-control sensing unit.

In addition, this application still provides a display terminal, display terminal include the terminal main part with display panel, the terminal main part with display panel is connected.

In addition, when the display panel according to the embodiment of the present invention is manufactured by using a mask, the first electrode and the second electrode may be formed by Physical Vapor Deposition (PVD) and then patterned by a wet etching process, the gate insulating layer and the passivation layer may be formed by Chemical Vapor Deposition (CVD), and a contact hole between the third electrode and the drain electrode of the first switching transistor may be formed by a dry etching process. The first electrode and the second electrode can both adopt metal such as copper or aluminum.

It is understood that different materials, processes or processes may be used in the actual process of manufacturing the display panel, and the present application is not limited to the manufacturing method and the manufacturing process of the display panel.

To sum up, the embodiment of the present application can reduce the number of electrodes in the first storage capacitor and the second storage capacitor by sharing all or part of the first storage capacitor of the display unit with the second storage capacitor of the photo-control sensing unit, thereby shortening the size of the black matrix, improving the penetration rate and the aperture ratio of the display panel, and improving the black line problem of the display panel when displaying the picture.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display panel and the display terminal provided in the embodiments of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiments above is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display panel comprising a plurality of display modules, at least one of said display modules comprising:

a display unit including a first storage capacitor;

the light-operated sensing unit comprises a second storage capacitor and is electrically connected with the display unit;

wherein all or part of the first storage capacitor is shared with the second storage capacitor.

2. The display panel of claim 1, wherein the display unit of at least one of the display modules further comprises a first switching transistor, and the photo sensing unit of at least one of the display modules further comprises a second switching transistor and a photo transistor, the second switching transistor being electrically connected to the photo transistor.

3. The display panel according to claim 2, wherein at least one of the display modules is a stacked structure, and an array substrate, a gate insulating layer, a passivation layer, a liquid crystal layer, and a color film substrate are sequentially stacked in each stacked structure.

4. The display panel according to claim 3, wherein in at least one of the display modules, a black matrix is disposed on a side of the color filter substrate facing the array substrate, and an orthogonal projection range of the black matrix of the display module on the array substrate is associated with an orthogonal projection range of the second switching transistor of the display module on the array substrate.

5. The display panel of claim 3, wherein the first switch transistor, the second switch transistor and the photo transistor in at least one of the display modules each include an active layer corresponding to the transistor, and wherein at least one of the active layers is disposed on a side of the gate insulating layer facing away from the array substrate and in the passivation layer.

6. The display panel according to claim 5, wherein the second storage capacitor in at least one of the display modules comprises a first electrode and a second electrode, wherein at least one of the first electrodes is disposed on a side of the array substrate facing the liquid crystal layer and in the gate insulating layer; at least one second electrode is arranged on one side, away from the array substrate, of the grid electrode insulating layer and is located in the passivation layer.

7. The display panel according to claim 6, wherein the first electrode and the second electrode of at least one of the second storage capacitors are disposed opposite to each other along a direction perpendicular to the array substrate, and wherein a center of projection of the first electrode of the at least one of the second storage capacitors on the array substrate coincides with a center of projection of the second electrode on the array substrate.

8. The display panel according to claim 3, wherein the gate of the first switching transistor, the gate of the second switching transistor, and the gate of the photo transistor in at least one of the display modules are disposed on a side of the array substrate facing the liquid crystal layer and in the gate insulating layer.

9. The display panel according to claim 3, wherein a third electrode is disposed in at least one of the display modules, and at least one of the third electrodes is disposed on a side of the passivation layer facing away from the array substrate.

10. A display terminal characterized in that the display terminal comprises a terminal body and a display panel according to any one of claims 1 to 9, the terminal body being connected to the display panel.