Brightness control device, method and display device

Abstract

A brightness control device, method and display device, the brightness control device comprising: a light detection circuit (11) and an integrated circuit chip (12) connected to the light detection circuit (11); the light detection circuit (11) comprising: at least one transistor configured to detect the light intensity of a light to be measured corresponding to an environment in which a display panel is located, and to generate an electrical signal corresponding to the light intensity of the light to be measured; and the integrated circuit chip (12) configured to generate a brightness detection value (L) of the light to be measured based on electrical signals (I1 and I2) corresponding to the light intensity of the light to be measured, and to adjust the display brightness of the display panel based on the brightness detection value (L) of the light to be measured.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to, but are not limited to, the field of display technology, and in particular to a brightness control device, method, and display device. Background Art

[0002] With the widespread use of LCD (Liquid Crystal Display) display panels, more and more electronic devices using LCD display panels are equipped with light sensors (also known as light sensors) to adjust the brightness of the LCD display panel according to the light brightness of the environment in which the electronic device is located, thereby saving power while providing users with a better visual experience.

[0003] However, since the cost of light sensors is often high and they are independent of the LCD display panel, the cost of electronic devices is high and it is not conducive to achieving full-screen electronic devices. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] On the one hand, an embodiment of the present disclosure provides a brightness control device, which is applied to a display panel, and the brightness control device includes: a light detection circuit and an integrated circuit chip connected to the light detection circuit; the light detection circuit includes: at least one transistor, which is configured to detect the light intensity of the light to be measured corresponding to the environment in which the display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be measured; the integrated circuit chip is configured to generate a brightness detection value of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured, and adjust the display brightness of the display panel based on the brightness detection value of the light to be measured.

[0006] On the other hand, an embodiment of the present disclosure further provides a display device, comprising: a display panel and the above-mentioned brightness control device, wherein:

[0007] The display panel includes: a display area, and a binding area and a frame area located on opposite sides of the display area in a first direction;

[0008] The light detection circuit in the brightness control device is arranged in the frame area, and the integrated circuit chip in the brightness control device is bound and connected to the binding area.

[0009] In another aspect, an embodiment of the present disclosure further provides a brightness control method, which is applied to the above-mentioned brightness control device. The brightness control method includes:

[0010] Detecting the light intensity of the light to be measured corresponding to the environment in which the display panel is located, and generating an electrical signal corresponding to the light intensity of the light to be measured;

[0011] A brightness detection value of the light to be measured is generated based on an electrical signal corresponding to the light intensity of the light to be measured, and the display brightness of the display panel is adjusted based on the brightness detection value of the light to be measured.

[0012] Other features and advantages of the present disclosure will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present disclosure. Other advantages of the present disclosure can be realized and obtained through the solutions described in the description and the drawings.

[0013] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are intended to facilitate understanding of the technical solutions of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present disclosure and do not constitute a limitation of the technical solutions of the present disclosure. The shapes and sizes of each component in the drawings do not reflect the actual scale and are intended only to illustrate the contents of the present disclosure.

[0015] Figure 1 is a structural schematic diagram of a brightness control device in an exemplary embodiment of the present disclosure;

[0016] Figure 2 is a structural diagram of a light detection circuit in an exemplary embodiment of the present disclosure;

[0017] Figure 3 A timing diagram of an integrated circuit chip in an exemplary embodiment of the present disclosure;

[0018] Figure 4 is another structural schematic diagram of a brightness control device in an exemplary embodiment of the present disclosure;

[0019] Figure 5 is another structural diagram of a brightness control device in an exemplary embodiment of the present disclosure;

[0020] Figure 6 A schematic diagram of a data format for transmitting brightness detection values ​​to an integrated circuit chip in an exemplary embodiment of the present disclosure;

[0021] Figure 7 is a schematic structural diagram of a display device in an exemplary embodiment of the present disclosure;

[0022] Figure 8 is another structural schematic diagram of a display device in an exemplary embodiment of the present disclosure;

[0023] Figure 9 A schematic diagram of wiring distribution in a binding area of ​​a display panel in an exemplary embodiment of the present disclosure;

[0024] Figure 10 A schematic diagram of pin distribution of an integrated circuit chip in an exemplary embodiment of the present disclosure;

[0025] Figure 11 It is a partial schematic diagram of a display device in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] A number of embodiments are described herein, but this description is exemplary and not restrictive, and more embodiments and implementations may be possible within the scope of the embodiments described herein. Although many possible feature combinations are shown in the drawings and discussed in the exemplary embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0027] When describing representative embodiments, the specification may have presented the method or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps herein, the method or process should not be limited to the steps in that specific order. As will be understood by those skilled in the art, other orders of steps are also possible. Therefore, the specific order of the steps set forth in the specification should not be interpreted as a limitation on the claims. In addition, claims to the method or process should not be limited to performing their steps in the order written, and those skilled in the art can readily understand that these orders can be changed and still remain within the spirit and scope of the disclosed embodiments.

[0028] In the drawings, the size of each component, layer thickness, or region may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of each component in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or numerical values ​​shown in the drawings.

[0029] In this specification, ordinal numbers such as “first”, “second” and “third” are provided to avoid confusion among constituent elements, and are not intended to limit the number.

[0030] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to has a specific orientation, is constructed, or operates in a specific orientation. Therefore, they should not be construed as limiting the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced according to the circumstances.

[0031] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the meaning of these terms in this disclosure based on the specific circumstances.

[0032] In this specification, "electrically connected" includes components connected together via an element having some electrical function. This "element having some electrical function" is not particularly limited as long as it enables the transfer of electrical signals between the connected components. Examples of this "element having some electrical function" include electrodes, wiring, switching elements such as transistors, and other functional components such as resistors, inductors, and capacitors.

[0033] In this specification, a transistor refers to a device that includes at least three terminals: a gate electrode (gate or control electrode), a drain electrode (drain electrode terminal, drain region, or drain), and a source electrode (source electrode terminal, source region, or source). A transistor has a channel region between the drain and source electrodes, and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to the region through which current primarily flows.

[0034] In this specification, in order to distinguish the two poles of a transistor other than the gate electrode (gate or control electrode), one of the poles is directly described as the first pole and the other pole as the second pole, wherein the first pole can be the drain electrode and the second pole can be the source electrode, or the first pole can be the source electrode and the second pole can be the drain electrode. In the case of using transistors with opposite polarity or the case where the current direction changes during circuit operation, the functions of the "source electrode" and the "drain electrode" are sometimes interchanged. Therefore, in this specification, the "source electrode" and the "drain electrode" can be interchanged.

[0035] The transistors in the embodiments of the present disclosure may be thin film transistors (TFTs) or field effect transistors (FETs) or other devices with the same characteristics. For example, the thin film transistors used in the embodiments of the present disclosure may include, but are not limited to, oxide TFTs or low temperature polysilicon thin film transistors (LTPS TFTs). The embodiments of the present disclosure do not limit this.

[0036] In order to provide users with a better user experience, in some technologies, more and more electronic devices with LCD display panels are equipped with light sensors (also called light sensors). For example, handheld electronic devices such as tablets, laptops (Notebooks, NB) and mobile phones are equipped with light sensors. Usually, the light sensor is located above the display panel of the electronic device, so that the electronic device can automatically adjust the display brightness of the display panel of the electronic device according to the brightness of the light in the environment of the electronic device detected by the light sensor, thereby saving power consumption and providing users with a better visual experience.

[0037] However, for some technologies that use light sensors to adjust the brightness of LCD display panels, on the one hand, due to the high cost of light sensors, the cost of electronic devices equipped with light sensors will also be correspondingly high; on the other hand, since the light sensors and LCD display panels are usually set independently, they occupy a large space on the main board, which is not conducive to the electronic equipment to achieve the integration of the entire machine function; on the other hand, in order to facilitate the light sensors in electronic devices to collect the information of the light to be measured (for example, ambient light), additional through holes are often opened in the LCD display panel, resulting in a reduction in the screen-to-body ratio, which is not conducive to the electronic equipment to achieve a full screen.

[0038] Embodiments of the present disclosure provide a brightness control device. In practical applications, the brightness control device can be applied to a display panel of an electronic device, capable of detecting the brightness of the ambient light in the electronic device's environment and automatically adjusting the display brightness of the display panel in the electronic device based on the ambient light brightness. For example, the electronic device may be a tablet computer, a laptop computer, or a mobile phone. For example, the display panel may be an LCD display panel.

[0039] Figure 1 FIG. 1 is a structural diagram of a brightness control device in an exemplary embodiment of the present disclosure. Figure 1 As shown, the brightness control device may include: a light detection circuit 11 and an integrated circuit chip 12 connected to the light detection circuit 11; wherein,

[0040] The light detection circuit 11 includes: at least one transistor, configured to detect the light intensity of the light to be measured (for example, ambient light) corresponding to the environment in which the display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be measured; an integrated circuit (IC) chip 12, configured to generate a brightness detection value of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured, and adjust the display brightness of the display panel based on the brightness detection value of the light to be measured.

[0041] The brightness control device provided by the embodiment of the present disclosure, on the one hand, because the light detection circuit includes at least one transistor, the cost of the light detection circuit is less than the cost of the light sensor. Compared with electronic devices equipped with light sensors, the cost of adjusting the display brightness of the display panel can be effectively reduced, which can reduce the cost of the electronic device. On the other hand, because the light detection circuit and the integrated circuit chip are both arranged in the display panel and are not independent of the display panel, it is possible to integrate the detection function of the light to be measured (for example, ambient light) into the light detection circuit of the display panel, and to integrate the light to be measured (for example, ambient light) collection and brightness adjustment functions into the integrated circuit chip of the display panel, which is conducive to the electronic device with a display panel to achieve the integration of the whole machine function. Moreover, compared with electronic devices equipped with light sensors, it can save the mainboard area and increase the screen-to-body ratio, which is conducive to the electronic device to achieve a full screen.

[0042] The light detection circuit is described below with reference to the accompanying drawings.

[0043] In an exemplary embodiment, Figure 1 and Figure 2 As shown, the light detection circuit 11 may include a detection transistor unit 111 and a reference transistor unit 112. The detection transistor unit 111 is configured to be irradiated by the light to be measured (eg, ambient light), and the reference transistor unit 112 is configured not to be irradiated by the light to be measured.

[0044] In an exemplary embodiment, at least a portion of the channel region of the detection transistor unit 111 may be not blocked by the light shielding layer, so that the detection transistor unit 111 is in an environment where the light to be measured is incident and can receive the light to be measured.

[0045] In an exemplary embodiment, any light shielding structure for shielding the reference transistor unit 112, such as a light shielding layer or a black matrix (BM), can be set in the area where the reference transistor unit 112 is located, so that the reference transistor unit is placed in an environment where no light to be measured is incident and is not exposed to the light to be measured.

[0046] In an exemplary embodiment, Figure 2As shown, the detection transistor unit 111 may include: at least one first transistor, configured to be irradiated by the light to be measured (for example, ambient light), detect the light intensity of the light to be measured and generate a first electrical signal I1 corresponding to the light intensity of the light to be measured. The reference transistor unit 112 may include: at least one second transistor, configured not to be irradiated by the light to be measured, and generate a second electrical signal I2 corresponding to the light intensity of the environment without the incident light to be measured. For example, the parameters of the second transistor and the first transistor can be set to be consistent (for example, multiple components of the two (including the gate, source, drain and active layer) can be made of the same material and have the same size). Since the second transistor is configured not to be irradiated by the light to be measured, the light intensity detected by the second transistor can be used as the reference light intensity, and the corresponding second electrical signal I2 is the reference electrical signal.

[0047] In an exemplary embodiment, the detection transistor unit 111 may be formed by N first transistors, and the reference transistor unit 112 may be formed by N second transistors, where N is an integer greater than or equal to 2. For example, the N first transistors may be arranged in rows or columns, and the N second transistors may be arranged in rows or columns. In this way, by configuring the detection transistor unit to be formed by a plurality of TFTs and the reference transistor unit to be formed by a plurality of TFTs, the detection light intensity error caused by the transistor manufacturing process can be reduced, and the detection light intensity error caused by TFT impedance differences can be effectively reduced.

[0048] In an exemplary embodiment, the control electrodes of the N first transistors are connected to serve as the first control terminal of the light detection circuit (i.e., the control terminal of the detection transistor unit) to receive a first control signal G1 provided by the integrated circuit chip; the control electrodes of the N second transistors are connected to serve as the second control terminal of the light detection circuit (i.e., the control terminal of the reference transistor unit) to receive a second control signal G2 provided by the integrated circuit chip; and the first electrodes of the N first transistors and the first electrodes of the N second transistors are connected to serve as the input terminal of the light detection circuit (i.e., the first electrodes of the N first transistors are connected to serve as the first terminal of the detection transistor unit, the first electrodes of the N second transistors are connected to serve as the first terminal of the reference transistor unit, and the first terminals of the detection transistor unit and the first terminal of the reference transistor unit are connected to serve as the input terminal of the light detection circuit) to receive an input signal S provided by the integrated circuit chip. For example, the first control terminal of the light detection circuit and the second control terminal of the light detection circuit can be electrically connected to receive a common signal control.

[0049] For example, taking the first transistor and the second transistor as TFTs, and N as 3, as Figure 2As shown, the detection transistor unit 111 may include: TFT11, TFT12 and TFT13, and the detection transistor unit 111 is configured to receive an operating voltage (including: an input signal S and a first control signal G1); detect the light intensity of the light to be measured, and generate a corresponding first electrical signal I1. The reference transistor unit 112 may include: TFT21, TFT22 and TFT23), and the reference transistor unit 112 is configured to receive an operating voltage (including: an input signal S and a second control signal G2), and generate a corresponding second electrical signal I2 under the condition that the light to be measured is blocked. For example, Figure 2 As shown, the control electrode of TFT11, the control electrode of TFT12 and the control electrode of TFT13 are connected as the first control end of the light detection circuit to receive the first control signal G1 provided by the integrated circuit chip; the control electrode of TFT21, the control electrode of TFT22 and the control electrode of TFT23 are connected as the second control end of the light detection circuit to receive the second control signal G2 provided by the integrated circuit chip; the first electrode of TFT11, the first electrode of TFT12, the first electrode of TFT13, the first electrode of TFT21, the first electrode of TFT22 and the first electrode of TFT23 are connected as the input end of the light detection circuit to receive the input signal S provided by the integrated circuit chip.

[0050] For example, Figure 2 As shown, the first electrode voltage of the TFT in the detection transistor unit 111 is the same as the first electrode voltage of the TFT in the reference transistor unit 112, the control electrode voltage of the TFT in the detection transistor unit 111 is the same as the control electrode voltage of the TFT in the reference transistor unit 112, the sum of the second electrode currents of the multiple TFTs in the detection transistor unit 111 is used as the first electrical signal I1 corresponding to the light intensity of the light to be measured, and the sum of the second electrode currents of the multiple TFTs in the reference transistor unit 112 is used as the second electrical signal I2 corresponding to the light intensity of the light to be measured. In this way, because the output current of a single TFT is relatively small, by using the sum of the second electrode currents of the multiple TFTs in the detection transistor unit 111 as the first electrical signal I1 corresponding to the light intensity of the light to be measured, and the sum of the second electrode currents of the multiple TFTs in the reference transistor unit 112 as the second electrical signal I2 corresponding to the light intensity of the light to be measured, it is possible to facilitate the integrated circuit chip to collect the first electrical signal I1 and the second electrical signal I2.

[0051] In an exemplary embodiment, the multiple TFTs in the detection transistor unit and the multiple TFTs in the reference transistor unit are TFTs with the same parameters. For example, the multiple components (e.g., including the control electrode, the first electrode, the second electrode, and the active layer) of the multiple TFTs in the detection transistor unit and the multiple TFTs in the reference transistor unit can be made of the same material and have the same size. Since the multiple TFTs in the reference transistor unit are configured to be unexposed to the light to be measured, the light intensity detected by the multiple TFTs in the reference transistor unit can be used as the reference light intensity, and the corresponding second electrical signal I2 is the reference electrical signal, which can enable the reference transistor unit to serve as a reference unit for the detection transistor unit. In this way, detection accuracy can be improved.

[0052] When multiple TFTs in a detection transistor unit are used to detect light to be measured (e.g., ambient light), the light is detected by utilizing the channel regions of the multiple TFTs in the detection transistor unit. The active layer includes a source region, a drain region, and a channel region located between the source and drain regions. The source region is the region where the active layer contacts the source electrode, and the drain region is the region where the active layer contacts the drain electrode. The channel region corresponds to the gap between the source and drain electrodes and is the portion between the source and drain regions. Therefore, at least a portion of the channel region of the detection transistor unit is configured to be exposed to light to be measured (e.g., ambient light). In this way, when detecting light to be measured (e.g., ambient light), an operating voltage (including an input signal S, a first control signal G1, and a second control signal G2) is supplied to the light detection circuit. When the light to be measured (e.g., ambient light) strikes the detection transistor unit, the characteristics of the detection transistor unit are affected by the ambient light, and the detection transistor unit generates a first electrical signal I1 corresponding to the light intensity of the light to be measured. Since the reference transistor unit is not struck by the light to be measured, the reference transistor unit generates a second electrical signal I2 (i.e., a reference electrical signal) corresponding to the light intensity when not struck by the light to be measured. Subsequently, the first electrical signal I1 generated by the detection transistor unit and the second electrical signal I2 generated by the reference transistor unit are collected by the integrated circuit chip. By comparing the first electrical signal I1 and the second electrical signal I2, the effect of the light to be measured (e.g., ambient light) on the detection transistor unit can be determined, and the brightness of the light to be measured (e.g., ambient light) can be calculated. Thus, exemplary embodiments of the present disclosure integrate a light detection circuit on a display panel, replacing an additional light sensor provided on an electronic device. This can reduce the cost of the electronic device, save space occupied by the light sensor, and increase the competitiveness of the electronic device.

[0053] For example, when the input signal S provided by the integrated circuit chip is a negative voltage signal, the source voltage of the TFT in the detection transistor unit is the same as the source voltage of the TFT in the reference transistor unit, the gate voltage of the TFT in the detection transistor unit is the same as the gate voltage of the TFT in the reference transistor unit, the sum of the drain currents of the multiple TFTs in the detection transistor unit can be used as the first electrical signal I1 corresponding to the light intensity of the light to be measured (e.g., ambient light), and the sum of the drain currents of the multiple TFTs in the reference transistor unit can be used as the second electrical signal I2 corresponding to the light intensity when not irradiated by the light to be measured. When the input signal S provided by the integrated circuit chip is a positive voltage signal, the drain voltage of the TFT in the detection transistor unit is the same as the drain voltage of the TFT in the reference transistor unit, the gate voltage of the TFT in the detection transistor unit is the same as the gate voltage of the TFT in the reference transistor unit, the sum of the source currents of the multiple TFTs in the detection transistor unit can be used as the first electrical signal I1 corresponding to the light intensity of the light to be measured, and the sum of the source currents of the multiple TFTs in the reference transistor unit can be used as the second electrical signal I2 corresponding to the light intensity of the light to be measured.

[0054] In an exemplary embodiment, the detection transistor unit and the reference transistor unit can be set to have basically the same parameters except for the different illumination parameters. In this way, the influence of factors such as the difference in the position of the transistors and the offset of the transistor's volt-ampere characteristic curve caused by temperature changes on the accuracy of the light detection circuit in detecting the light intensity of the light to be measured can be avoided. It can be ensured that the difference between the first electrical signal I1 and the second electrical signal I2 generated by the light detection circuit is only caused by the different illumination parameters. Therefore, the accuracy of the light detection module in detecting the light intensity of the light to be measured (for example, ambient light) can be improved.

[0055] The integrated circuit chip in the embodiment of the present disclosure is described below with reference to the accompanying drawings, taking an example in which a light detection circuit includes a detection transistor unit and a reference transistor unit.

[0056] In an exemplary embodiment, depending on the application scenario of the integrated circuit chip, the integrated circuit chip can be a touch and display driver integration (TDDI) chip, or a display driver IC (DDI) chip. Of course, it can also be other chips, for example, including but not limited to a touch driver (TIC) or a gate driver (Gate IC). Here, the embodiments of the present disclosure do not limit this.

[0057] In an exemplary embodiment, Figure 1As shown, the integrated circuit chip 12 may include: a power supply module 121, which is connected to the first end 1111 of the detection transistor unit, the first end 1121 of the reference transistor unit, the control end 1112 of the detection transistor unit, and the control end 1122 of the reference transistor unit, and is configured to provide an operating voltage (including: an input signal S, a first control signal G1, and a second control signal G2) to the detection transistor unit 111 and the reference transistor unit 112.

[0058] In an exemplary embodiment, Figure 1 As shown, the integrated circuit chip 12 may include: a first pin P1, a second pin P2, and a third pin P3, wherein a power supply module 121 is connected to the first terminal 1111 of the detection transistor unit through the first pin P1 and a first lead line, and is connected to the first terminal 1121 of the reference transistor unit through the first pin P1 and the first lead line, the power supply module 121 is connected to the control terminal 1112 of the detection transistor unit through the second pin P2 and the second lead line, and is connected to the control terminal 1122 of the reference transistor unit through the third pin P3 and the third lead line; the power supply module 121 is configured to provide an operating voltage to the detection transistor unit 111 and the reference transistor unit 112 through the first pin P1, the second pin P2, and the third pin P3. For example, the power supply module 121 provides an input signal S (e.g., as a source signal) to the first terminal 1111 (e.g., serving as a source) of the detection transistor unit and the first terminal 1121 (e.g., serving as a source) of the reference transistor unit through the first pin P1. For example, the power supply module 121 provides the first control signal G1 to the control terminal 1112 of the detection transistor unit through the second pin P2. For example, the power supply module 121 provides the second control signal G2 to the control terminal 1122 of the reference transistor unit through the third pin P3.

[0059] In an exemplary embodiment, Figure 3 FIG. 1 is a timing diagram of an integrated circuit chip in an exemplary embodiment of the present disclosure, as shown in FIG. Figure 3 As shown, the power supply module is configured to transmit a first square wave timing signal to the detection transistor unit and the reference transistor unit, wherein each clock cycle of the input signal in the first square wave timing signal includes: a first period T1 having a first low-level signal LOW1 and a second period T2 having a first high-level signal HIGH1, wherein the rising edge of the first high-level signal in the first square wave timing signal is located before the falling edge of the frame synchronization idle time Vporch;

[0060] a power supply module configured to provide a second square wave timing signal for transmission to the detection transistor unit, wherein each clock cycle of the first control signal in the second square wave timing signal includes: a first period T1 having a second low-level signal LOW2 and a second period T2 having a second high-level signal HIGH2; wherein a rising edge of the second high-level signal in the second square wave timing signal is located before a falling edge of the frame synchronization idle time Vporch; and

[0061] The power supply module is configured to provide a third waveform timing signal for transmission to the reference transistor unit, where each clock cycle of the second control signal in the third waveform timing signal includes: a first time period T1 having a second low-level signal LOW2 and a second time period T2 having a second high-level signal HIGH2; wherein the rising edge of the second high-level signal in the third waveform timing signal is located before the falling edge of the frame synchronization idle time Vporch.

[0062] Here, the frame synchronization idle time Vporch includes the leading edge (also called the front porch, Front Porch) and the trailing edge (also called the back porch, Back Porch), which refers to the idle clock period after the horizontal synchronization signal (also called the line synchronization signal, HSYNC) or the vertical synchronization signal (also called the field synchronization signal, VSYNC) in a frame signal.

[0063] For example, the first time period T1 in the first square wave timing signal, the first time period T1 in the second square wave timing signal, and the first time period T1 in the third square wave timing signal are equal, and the second time period T2 in the first square wave timing signal, the second time period T2 in the second square wave timing signal, and the second time period T2 in the third square wave timing signal are equal.

[0064] For example, the sum of the first time period T1 and the second time period T2 is equal to the duration of one frame.

[0065] For example, the timing information of the second square wave timing signal is completely consistent with the timing information of the third square wave timing signal.

[0066] In an exemplary embodiment, Figure 1 As shown, the integrated circuit chip 12 may include: a signal acquisition module 122 connected to the detection transistor unit 111 and the reference transistor unit 112 and a signal processing module 123 connected to the signal acquisition module 122;

[0067] The signal acquisition module 122 is configured to acquire the first electrical signal I1 and the second electrical signal I2, and send the first electrical signal I1 and the second electrical signal I2 to the signal processing module 123;

[0068] The signal processing module 123 is configured to obtain a corresponding electric signal difference based on the first electric signal I1 and the second electric signal I2; and generate a brightness detection value of the light to be measured based on the electric signal difference.

[0069] In an exemplary embodiment, Figure 1 As shown, the signal acquisition module 122 is connected to the second end 1113 of the detection transistor unit and the second end 1123 of the reference transistor unit, and is configured to collect the first electrical signal I1 from the second end 1113 of the detection transistor unit and collect the second electrical signal I2 from the second end 1123 of the reference transistor unit.

[0070] In an exemplary embodiment, Figure 1 As shown, the integrated circuit chip 12 may include: a fourth pin P4 and a fifth pin P5, wherein the signal acquisition module 122 is connected to the second end 1113 of the detection transistor unit through the fourth pin P4 and the fourth lead wire, and the signal acquisition module 122 is connected to the second end 1123 of the reference transistor unit through the fifth pin P5 and the fifth lead wire; the signal acquisition module 122 is configured to collect the first electrical signal I1 through the fourth pin P4 and collect the second electrical signal I2 through the fifth pin P5.

[0071] In an exemplary embodiment, Figure 3 As shown, the signal acquisition module can be configured to collect the first electrical signal I1 through the fourth pin P4 in the second time period T2 corresponding to the frame synchronization idle time Vporch; and collect the second electrical signal I2 through the fifth pin P5 in the second time period T2 corresponding to the frame synchronization idle time Vporch.

[0072] For example, Figure 3 As shown, when the gate and source of the TFT in the detection transistor unit and the reference transistor unit are at a high level, the on-state current Ion of the TFT can be collected (including the first electrical signal I1 and the second electrical signal I2). The collection interval is the interval corresponding to the frame synchronization idle time Vporch in the timing. Considering that the transistor's volt-ampere characteristic curve will drift when the TFT is in a high-level on state for a long time, the first square wave timing signal, the second square wave timing signal, and the third square wave timing signal are square wave signals, and the leading edge of the duty cycle (Duty) of the square wave signal is adjustable to ensure that the interval corresponding to the frame synchronization idle time Vporch in the first square wave timing signal, the second square wave timing signal, and the third square wave timing signal are in a high-level state, so that sampling can be performed.

[0073] For another example, for a touch display panel with both image display and touch sensing functions, the integrated circuit chip generally performs touch sensing operations on touch gestures during the frame synchronization idle time Vporch (including the front porch and the back porch) during image display. Therefore, the second time period T2 in the first square wave timing signal, the second square wave timing signal, and the third wave timing signal corresponding to the interval of the frame synchronization idle time Vporch can be divided into two sections, wherein the front section of the second time period T2 corresponding to the interval of the frame synchronization idle time Vporch can be reserved for the signal acquisition module in the integrated circuit chip to collect the first electrical signal I1 and the second electrical signal I2, and the rear section of the second time period T2 corresponding to the interval of the frame synchronization idle time Vporch can be reserved for the integrated circuit chip to perform touch sensing operations.

[0074] In an exemplary embodiment, the signal acquisition module may include: an analog front end (AFE).

[0075] In an exemplary embodiment, Figure 4 As shown, the signal acquisition module 122 may include: a first resistor unit R1, a second resistor unit R2, a filter circuit for noise reduction, and an analog-to-digital converter (also known as an analog / digital converter, Analog-to-Digital Converter, ADC), wherein the first resistor unit R1 is connected to the detection transistor unit 111 and the filter circuit for noise reduction, the second resistor unit R2 is connected to the reference transistor unit 112 and the filter circuit for noise reduction, and the analog-to-digital converter ADC is connected to the filter circuit for noise reduction. Here, the embodiment of the present disclosure does not limit the structure of the filter circuit, analog-to-digital converter ADC, and other circuits, as long as they can achieve the corresponding functions.

[0076] Of course, in addition to the two methods listed above, the signal acquisition module can also be implemented in other ways that can achieve corresponding functions. Here, the embodiments of the present disclosure do not limit this.

[0077] In an exemplary embodiment, the signal processing module may be configured to convert the electrical signal difference into a brightness detection value of the light to be measured according to the following relationship:

[0078] L = a × V × V + b × V + c formula (1);

[0079] Wherein, L represents the brightness detection value of the light to be measured, V represents the electrical signal difference corresponding to the light intensity of the light to be measured, a is the first coefficient obtained in advance, b is the second coefficient obtained in advance, and c is the third coefficient obtained in advance.

[0080] For example, Figure 4 As shown, the signal processing module 123 may include a memory and a processor (not shown in the figure), the memory is configured to store program instructions; the processor is connected to the signal acquisition module 122 and the memory, respectively, and the processor is configured to call the program instructions in the memory and convert the electrical signal difference V into the brightness detection value L of the light to be measured according to the above formula (1).

[0081] In an exemplary embodiment, Figure 1 and Figure 4 As shown, the integrated circuit chip 12 may include: a signal processing module 123, a signal generating module 124 and a light-emitting driving module 125; the signal generating module 124 may be connected to the signal processing module 123 and the light-emitting driving module 125; wherein,

[0082] The signal processing module 123 may be configured to generate a brightness detection value L of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured (e.g., including the first electrical signal I1 and the second electrical signal I2); and send the brightness detection value L of the light to be measured to the signal generation module 124;

[0083] The signal generating module 124 may be configured to generate a corresponding first driving signal based on the brightness detection value L of the light to be measured, and send the first driving signal to the light driving module 125;

[0084] The light driving module 125 can be configured to control the display brightness of the display panel based on the first driving signal. In this way, the brightness of the display panel is adjusted based on the brightness detection value of the light to be measured within the integrated circuit chip, and the functions of light detection and brightness adjustment can be added without increasing the cost and size.

[0085] For example, the brightness control device provided in the embodiment of the present disclosure can be applied to an electronic device that is not equipped with a light sensor. In this way, the brightness detection value L of the light to be measured can be sent to the signal generation module in the integrated circuit chip, so that the signal generation module in the integrated circuit chip can be directly used to generate a driving signal according to the brightness detection value L of the light to be measured, so as to realize the regulation of the display brightness of the display panel.

[0086] For example, the brightness control device provided in the embodiment of the present disclosure can be applied to a display device with a backlight source, and the light driving module can control the brightness of the backlight source based on the first driving signal to achieve regulation of the display brightness of the display panel.

[0087] In an exemplary embodiment, Figure 1 and Figure 4As shown, the integrated circuit chip 12 may include: a signal processing module 123 and a light-emitting driving module 125; wherein the signal processing module 123 and the light-emitting driving module 125 may be connected to an application processor (AP);

[0088] The signal processing module 123 may be configured to generate a brightness detection value L of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured (e.g., including the first electrical signal I1 and the second electrical signal I2); and send the brightness detection value L of the light to be measured to the application processor;

[0089] The light driving module 125 can be configured to receive a third driving signal generated by the application processor based on the brightness detection value L of the light to be measured, and control the display brightness of the display panel based on the third driving signal. In this way, the application range of the brightness control device can be enriched.

[0090] For example, the brightness control device provided by the embodiment of the present disclosure can be applied to an electronic device that has an installed light sensor. In this way, the brightness detection value L of the light to be measured can be sent to the application processor in the electronic device through the signal processing module in the integrated circuit chip, so that the application processor in the electronic device can be used to adjust the display brightness of the display panel according to the brightness detection value L of the light to be measured collected by the integrated circuit chip.

[0091] Here, in an electronic device provided with a brightness control device, the application processor AP and the brightness control device may be two physically separate independent parts.

[0092] In an exemplary embodiment, the light driving module may be configured to receive a second driving signal generated by a user operation and sent by an application processor, and control the display brightness of the display panel based on the second driving signal. In this way, the user can manually adjust the display brightness of the display panel.

[0093] In an exemplary embodiment, in order to avoid conflicts between the manual adjustment and automatic adjustment functions, Figure 5 As shown, the integrated circuit chip 12 may further include: a detection module 127 and a control module 126; wherein the detection module 127 is connected to the control module 126, and the detection module 127 is connected to the application processor; the control module 126 is connected to the signal generating module 124, the control module 126 is connected to the light driving module 125, and the control module 126 is connected to the application processor; wherein,

[0094] The detection module 127 is configured to detect whether a signal change occurs at the signal output terminal of the application processor;

[0095] The control module 126 is configured to control the connection status between the light-emitting driver module 125, the signal generation module 124, and the application processor based on whether a signal change occurs at the signal output terminal of the application processor. Thus, when an electronic device using a brightness control device can provide a function of automatically adjusting the brightness of a display panel based on a brightness detection value of a light to be measured by the brightness control device, and a function of manually adjusting the brightness of the display panel based on a user operation by combining the brightness control device with the application processor, the detection module and the control module can be integrated within the integrated circuit chip to avoid conflicts between automatic and manual adjustments based on whether a signal change occurs at the signal output terminal of the application processor, thereby enhancing the product's intelligence and improving the user experience.

[0096] In an exemplary embodiment, Figure 5 As shown, the control module 126 can be configured to connect the connection between the light-emitting driving module 125 and the application processor and disconnect the connection between the light-emitting driving module 125 and the signal generating module 124 when the detection module 127 detects a signal change at the signal output terminal of the application processor; the light-emitting driving module 125 is configured to receive a second driving signal generated based on a user operation and sent by the application processor when the detection module 127 detects a signal change at the signal output terminal of the application processor; and control the display brightness of the display panel based on the second driving signal.

[0097] In an exemplary embodiment, Figure 5 As shown, the control module 126 can be configured to connect the connection between the light-emitting driving module 125 and the signal generating module 124 and disconnect the connection between the light-emitting driving module 125 and the application processor when the detection module 127 detects that there is no signal change at the signal output end of the application processor; the light-emitting driving module 125 is configured to receive the first driving signal sent by the signal generating module 124 when the detection module 127 detects that there is no signal change at the signal output end of the application processor; and control the display brightness of the display panel based on the first driving signal.

[0098] In this way, when an electronic device equipped with a brightness control device provides a function of automatically adjusting the brightness of the display panel according to the brightness detection value of the light to be measured through the brightness control device and a function of manually adjusting the brightness of the display panel according to user operation by combining the brightness control device with an application processor, the priority of manual adjustment can be set to be higher, which can improve the user experience.

[0099] Of course, in addition to the various methods listed above, there may be other solutions for adjusting the display brightness of the display panel, and the embodiments of the present disclosure do not limit this.

[0100] In an exemplary embodiment, the signal generating module may be configured to obtain a first driving signal corresponding to the brightness detection value L of the light to be measured according to a pre-stored mapping relationship between the brightness value L and the driving signal.

[0101] For example, each driving signal may be mapped to a brightness value, or each driving signal may be mapped to a range of brightness values. When each driving signal is mapped to a range of brightness values, the signal generation module may determine, based on the mapping relationship between the brightness values ​​and the driving signals, a first driving signal corresponding to the brightness value range in which the brightness detection value L of the light to be measured lies.

[0102] For example, Figure 1 and Figure 4 As shown, the signal generating module 124 may include a memory and a processor, the memory being configured to store a mapping relationship between a brightness value L and a driving signal and program instructions; the processor may be connected to the light driving module 125 and the memory, and the processor may be configured to call the program instructions in the memory, and obtain a first driving signal corresponding to the brightness detection value L of the light to be measured according to a pre-stored mapping relationship between the brightness value L and the driving signal; and send the first driving signal to the light driving module 125.

[0103] In an exemplary embodiment, the signal generation module and the signal processing module can be physically combined. For example, the signal generation module and the signal processing module can be implemented by a microcontroller unit (MCU), wherein the MCU can be an existing one in the display panel, or can be an additional one. For another example, the signal generation module and the signal processing module can be implemented by a memory and a processor, and the processor can be configured to call program instructions in the memory, determine the corresponding electric signal difference according to the first electric signal I1 and the second electric signal I2; determine the brightness detection value L of the light to be measured according to the electric signal difference; obtain the first drive signal corresponding to the brightness detection value L of the light to be measured according to the pre-stored mapping relationship between the brightness value and the drive signal; and send the first drive signal to the light driving module. For example, the memory and the controller can be an existing memory and controller in the display panel, or can be an additional memory and controller.

[0104] In an exemplary embodiment, the driving signals (including the first driving signal, the second driving signal, and the third driving signal) may be pulse width modulation (PWM) signals or other signals. For example, if the driving signals are PWM signals, the mapping relationship between the brightness value and the driving signal may be a mapping relationship between the brightness value and the duty cycle of the PWM signal.

[0105] In an exemplary embodiment, taking the integrated circuit chip as a touch display driver TDDI chip as an example, the touch display driver TDDI chip may include: a data communication interface configured to transmit a touch data packet; a signal processing module configured to incorporate the brightness detection value of the light to be measured into the touch data packet to obtain a processed touch data packet; and transmit the processed touch data packet to an application processor via the data communication interface to transmit the brightness detection value of the light to be measured to the application processor. In this way, the brightness detection value can be transmitted to the application processor by reusing the data communication interface, eliminating the need for additional communication ports and reducing costs.

[0106] In an exemplary embodiment, the data communication interface may include any one or more of an inter-integrated circuit (I2C) interface, a serial peripheral interface (SPI) and a general purpose input / output (GPIO) interface.

[0107] In an exemplary embodiment, the brightness detection value may be 2-byte data.

[0108] In an exemplary embodiment, Figure 6 As shown, taking a 48-byte touch data packet as an example, the brightness detection value can be incorporated into the 45th and 46th bytes of the touch data packet. For example, the 45th byte can be the high-order data of the brightness detection value, and the 46th byte can be the low-order data of the brightness detection value. Of course, it can also be set in other positions in the touch data packet, and this embodiment of the present disclosure is not limited to this.

[0109] The present disclosure also provides a display device. In an exemplary embodiment, the display device may include: a display panel and the brightness control device according to one or more of the above exemplary embodiments.

[0110] like Figure 7 and Figure 8 As shown, in a plane parallel to the display panel, the display panel may include: a display area 100 and a peripheral area surrounding the display area, the peripheral area may include: a binding area 300 located on the opposite side of the first direction D1 of the display area 11 and a frame area 200 located on the side of the first direction D1 of the display area 11; the brightness control device may include: a light detection circuit 11 located in the frame area 200 and an integrated circuit chip 12 bound and connected to the binding area 300.

[0111] Thus, the display device provided by the embodiments of the present disclosure uses a light detection circuit to detect an electrical signal corresponding to the light intensity of the light to be measured in the environment surrounding the display panel, and uses an integrated circuit chip to collect the electrical signal corresponding to the light intensity of the light to be measured generated by the light detection circuit and control the display brightness of the display panel based on the electrical signal corresponding to the light intensity of the light to be measured. Thus, on the one hand, because the light detection circuit includes at least one transistor, the cost of the light detection circuit is less than that of the light sensor. Compared to electronic devices equipped with light sensors, the cost of adjusting the display brightness of the display panel can be effectively reduced, thereby reducing the cost of the electronic device. On the other hand, since the light detection circuit is located in the border area of ​​the display panel and the integrated circuit chip is located in the binding area of ​​the display panel, the light detection circuit and the integrated circuit chip are both arranged in the display panel and are not independent of the display panel. It is possible to integrate the light detection function to be measured in the border area of ​​the display panel, and integrate the light collection and brightness adjustment functions to be measured inside the integrated circuit chip in the binding area of ​​the display panel. This is conducive to the electronic equipment with a display panel to achieve the integration of the whole machine function. Compared with electronic equipment equipped with a light sensor, it can save the mainboard area, improve the screen-to-body ratio, and is conducive to the electronic equipment to achieve a full screen. It can save the mainboard area, improve the screen-to-body ratio, and is conducive to the electronic equipment to achieve a full screen.

[0112] In an exemplary embodiment, the display device may further include a light-emitting device, wherein the light-emitting device may be located on the display side of the display panel, or on a side opposite to the display side of the display panel, or on a peripheral side of the display panel. For example, when the light-emitting device is a front light source, the light-emitting device may be located on the display side of the display panel; when the light-emitting device is a direct-lit backlight source, the light-emitting device may be located on a side opposite to the display side of the display panel; and when the light-emitting device is an edge-lit backlight source, the light-emitting device may be located on a peripheral side of the display panel.

[0113] In an exemplary embodiment, Figures 8 and 9As shown, in a plane parallel to the display panel and in a second direction D2 intersecting the first direction D1, the binding area 300 may include: a first central area C and a timing signal routing area CGOUT; the timing signal routing area CGOUT is located at least one of on one side of the first central area C in the second direction D2 and on the side opposite to the second direction D2 of the first central area C; the timing signal routing area CGOUT includes: a first boundary located in the second direction D2 close to the first central area C, a second boundary opposite to the first boundary, and a first lead area A; the first lead area A is located at least one of on one side of the first boundary close to the second boundary within the timing signal routing area CGOUT and on one side of the second boundary within the timing signal routing area CGOUT close to the first boundary; the first lead area A may include: at least one of a first lead line, a second lead line, and a third lead line;

[0114] The integrated circuit chip 12 may include: a first pin P1, a second pin P2 and a third pin P3, wherein the integrated circuit chip 12 is connected to the first end 1111 of the detection transistor unit through the first pin P1 and the first lead line, and is connected to the first end 1121 of the reference transistor unit through the first pin P1 and the first lead line, the integrated circuit chip 12 is connected to the control end 1112 of the detection transistor unit through the second pin P2 and the second lead line, and the integrated circuit chip 12 is connected to the control end 1122 of the reference transistor unit through the third pin P3 and the third lead line; the integrated circuit chip 12 is configured to provide an operating voltage (including: an input signal S, a first control signal G1 and a second control signal G2) to the detection transistor unit 111 and the reference transistor unit 112 through the first pin P1, the second pin P2, the third pin P3, the first lead line, the second lead line and the third lead line.

[0115] In an exemplary embodiment, Figures 8 and 9As shown, in a plane parallel to the display panel and in a second direction D2 intersecting the first direction D1, the binding area 300 may further include: a touch signal routing area TX / RX located between the first central area C and the timing signal routing area CGOUT, wherein the touch signal routing area TX / RX includes: a first boundary located in the second direction D2 close to the first central area C, a second boundary opposite to the first boundary, and a second lead area B; the second lead area B is located on a side of the second boundary in the touch signal routing area TX / RX close to the first boundary; the second lead area B may include: a fourth lead line and a fifth lead line; the integrated circuit chip 12 may include: a fourth pin P4 and a fifth pin P5, wherein the integrated circuit chip 12 is connected to the second end 1113 of the detection transistor unit via the fourth pin P4 and the fourth lead line, and the integrated circuit chip 12 is connected to the second end 1123 of the reference transistor unit via the fifth pin P5 and the fifth lead line; the integrated circuit chip 12 is configured to collect the first electrical signal I1 via the fourth pin P4 and the fourth lead line, and to collect the second electrical signal I2 via the fifth pin P5 and the fifth lead line. In this way, the fourth lead line corresponding to the fourth pin P4 and the fifth lead line corresponding to the fifth pin P5 are distributed at the edge of the touch signal routing area TX / RX, thereby preventing the fourth lead line corresponding to the fourth pin P4 and the fifth lead line corresponding to the fifth pin P5 from intersecting the touch signal routing lines in the touch signal routing area TX / RX in the display area.

[0116] In an exemplary embodiment, the touch signal routing area TX / RX may distribute touch driving signal routings TX and touch sensing signal routings RX.

[0117] In an exemplary embodiment, Figure 9 As shown, the number of timing signal routing areas CGOUT that can be reserved is two, and correspondingly, the number of touch signal routing areas TX / RX that can be reserved is two.

[0118] In an exemplary embodiment, Figures 8 to 10 As shown, the arrangement of the binding pin area of ​​the integrated circuit chip 12 corresponds to the arrangement of the binding area 300 of the display panel. Figure 10 As shown, in a plane parallel to the display panel and in a second direction D2 intersecting the first direction D1, the binding pin area of ​​the integrated circuit chip 12 may include: a second central area C', a first area D' located on at least one side of the second central area C' and corresponding to the timing signal routing area CGOUT, and a second area E' located between the second central area C' and the first area D' and corresponding to the touch signal routing area TX / RX; wherein,

[0119] The first region D' includes: a first boundary close to the second central region C' in the second direction D2, a second boundary opposite to the first boundary, and a first sub-region A'; the first sub-region A' is located at least one of a side of the first boundary close to the second boundary within the first region D' and a side of the second boundary close to the first boundary within the first region D'; the first sub-region A' may include: a first pin P1, a second pin P2, and a third pin P3;

[0120] The second region E' includes: a first boundary located in the second direction D2 close to the second central region C', a second boundary opposite to the first boundary, and a second sub-region B', the second sub-region B' is located on the side of the second boundary within the second region E' close to the first boundary, and the second sub-region B' may include: a fourth pin P4 and a fifth pin P5.

[0121] Thus, on the one hand, the first sub-area A' within the single-sided first area D' corresponding to the timing signal routing area CGOUT can reserve pins P1 to P3, which can facilitate the enrichment of the application scenarios of the display device. For example, taking the clock signal CLK routing distributed in the timing signal routing area CGOUT as an example, when the display device where the integrated circuit chip is located is a GOA (Gate Driver On Array) product, the routing corresponding to pins P1 to P3 can be distributed inside the CLK routing. In this case, it can be as far away from the cutting line outside the display panel as possible to meet the electrostatic discharge (ESD) specification. When the display device where the integrated circuit chip is located is driven by a gate driver IC chip, the routing corresponding to pins P1 to P3 can be distributed outside the CLK routing. In this way, the routing corresponding to pins P1 to P3 can be avoided from crossing the clock signal CLK routing. On the other hand, the second sub-area B' within the second area E' reserves pins P4 and P5, preventing the traces corresponding to the P4 and P5 pins from intersecting with the touch signal traces in the touch signal trace area TX / RX. Furthermore, the first areas D' corresponding to the two timing signal trace areas CGOUT each reserve pins P1 to P3, and the two second areas E' corresponding to the touch signal trace areas TX / RX each reserve pins P4 and P5. This ensures consistent trace impedance for the detection transistor unit and the reference transistor unit on the display panel, and avoids the wiring pressure caused by the traces being concentrated on one side.

[0122] For example, Figures 8 to 10As shown, in a plane parallel to the display panel, the binding area 300 may include: a left CGOUT area, a left TX / RX area, a first center area C, a right TX / RX area, and a right CGOUT area arranged in sequence along the second direction D2; wherein, the left CGOUT area and the right CGOUT area are each provided with two first lead areas A, including: a left first lead area A and a right first lead area A; the left TX / RX area and the right TX / RX area are each provided with a second lead area B. Taking this as an example, the first lead (with Figure 8 The trace connected to the P1 pin in the middle) and the third lead (connected to the Figure 8 The line connected to the P3 pin in the right side is set in the first lead area A on the right side of the CGOUT area, and the second lead line (connected to the P3 pin in the right side) can be set in the first lead area A on the right side of the CGOUT area. Figure 8 The fourth lead line (connected to the P2 pin in the middle) is set in the first lead area A on the left side of the CGOUT area on the left side. Figure 8 The fifth lead (connected to the P4 pin in the middle) is set in the second lead area B in the left TX / RX area. Figure 8 The trace connected to the P5 pin in the middle is set in the second lead area B in the TX / RX area on the right.

[0123] In an exemplary embodiment, Figure 11 As shown, the display panel may further include a cutting area provided on the peripheral side of the binding area 300 , and the cutting area may include at least one cutting line 400 , and the shape of the at least one cutting line 400 is the same as the outline of the binding area 300 .

[0124] In an exemplary embodiment, Figure 11 As shown, the first pin P1 can be connected to the first end of the detection transistor unit and the first end of the reference transistor unit via a first lead wire located in a first lead area of ​​the timing signal routing area, away from the cutting line 400. The second pin P2 can be connected to the control end of the detection transistor unit via a second lead wire located in a first lead area of ​​the timing signal routing area, away from the cutting line 400. The third pin P3 can be connected to the control end of the reference transistor unit via a third lead wire located in a first lead area of ​​the timing signal routing area, away from the cutting line 400. In this way, the corresponding traces of pins P1 to P3 can be distributed inside the CLK trace, as far away as possible from the cutting line outside the display panel, and can meet ESD specifications.

[0125] In an exemplary embodiment, the display device may include, but is not limited to, an LCD display device.

[0126] In an exemplary embodiment, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigator.

[0127] For technical details not disclosed in the embodiment of the display device of the present disclosure, those skilled in the art may refer to the description in the embodiment of the brightness control device of the present disclosure for understanding, which will not be repeated here.

[0128] The present disclosure also provides a brightness control method, which can be applied to the brightness control device in one or more of the above exemplary embodiments. The brightness control method may include:

[0129] Step 1201: Detecting the light intensity of the light to be measured corresponding to the environment in which the display panel is located, and generating an electrical signal corresponding to the light intensity of the light to be measured;

[0130] Step 1202 : generating a brightness detection value of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured, and adjusting the display brightness of the display panel based on the brightness detection value of the light to be measured.

[0131] For technical details not disclosed in the embodiment of the brightness control method of the present disclosure, those skilled in the art may refer to the description in the embodiment of the brightness control device of the present disclosure for understanding, which will not be repeated here.

[0132] Although the embodiments disclosed in this disclosure are as described above, the above contents are merely embodiments adopted to facilitate understanding of the disclosure and are not intended to limit the disclosure. Any person skilled in the art to which the disclosure belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope of the disclosure. However, the scope of patent protection of the disclosure shall still be based on the scope defined by the appended claims.

Claims

1. A brightness control device, applied to a display panel, comprising: A light detection circuit and an integrated circuit chip connected to the light detection circuit; The light detection circuit includes: at least one transistor configured to detect the light intensity of the light to be measured corresponding to the environment where the display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be measured; The integrated circuit chip is a touch display driver chip; the touch display driver chip includes: a signal processing module, a signal generation module, a light driving module, a detection module, a control module and a data communication interface; the data communication interface is configured to transmit touch data packets; The signal processing module is configured to generate a brightness detection value of the light to be measured based on the electrical signal corresponding to the light intensity of the light to be measured; send the brightness detection value of the light to be measured to the signal generation module; incorporate the brightness detection value of the light to be measured into the touch data packet to obtain a processed touch data packet; and send the processed touch data packet to the application processor via the data communication interface to send the brightness detection value of the light to be measured to the application processor; The signal generating module is configured to generate a corresponding first driving signal based on the brightness detection value of the light to be measured, and send the first driving signal to the light driving module; The detection module is configured to detect whether a signal change occurs at the signal output terminal of the application processor; The control module is configured to control the connection status between the light driving module, the signal generating module and the application processor according to whether a signal change occurs at the signal output terminal of the application processor, so as to avoid conflict between manual adjustment and automatic adjustment functions; The light-emitting driving module is configured to receive a second driving signal generated based on a user operation and sent by the application processor if the connection between the light-emitting driving module and the application processor is connected and the connection between the light-emitting driving module and the signal generating module is disconnected, and control the display brightness of the display panel based on the second driving signal, thereby enabling the user to manually adjust the display brightness of the display panel; and is further configured to receive the first driving signal sent by the signal generating module if the connection between the light-emitting driving module and the signal generating module is connected and the connection between the light-emitting driving module and the application processor is disconnected, and control the display brightness of the display panel based on the first driving signal, thereby automatically adjusting the brightness of the display panel; and is further configured to receive a third driving signal generated based on the brightness detection value of the light to be measured and sent by the application processor, and control the display brightness of the display panel based on the third driving signal, so as to utilize the application processor in the electronic device to adjust the display brightness according to the brightness detection value of the light to be measured.

2. The brightness control device according to claim 1, wherein: The light detection circuit includes: a detection transistor unit and a reference transistor unit; wherein, The detection transistor unit includes: at least one first transistor configured to be irradiated by the light to be measured; detect the light intensity of the light to be measured, and generate a first electrical signal corresponding to the light intensity of the light to be measured; The reference transistor unit includes: at least one second transistor, which is configured to be not irradiated by the light to be measured and to generate a second electrical signal corresponding to the light intensity not irradiated by the light to be measured.

3. The brightness control device according to claim 2, wherein: The integrated circuit chip includes: a power supply module, which is connected to the first end of the detection transistor unit, the first end of the reference transistor unit, the control end of the detection transistor unit and the control end of the reference transistor unit, and is configured to provide an operating voltage to the detection transistor unit and the reference transistor unit.

4. The brightness control device according to claim 3, wherein: The integrated circuit chip includes: a first pin, a second pin and a third pin; the power supply module is connected to the first end of the detection transistor unit through the first pin and the first lead line, and is connected to the first end of the reference transistor unit through the first pin and the first lead line, the power supply module is connected to the control end of the detection transistor unit through the second pin and the second lead line, and the power supply module is connected to the control end of the reference transistor unit through the third pin and the third lead line; the power supply module is configured to provide an operating voltage to the detection transistor unit and the reference transistor unit through the first pin, the second pin and the third pin.

5. The brightness control device according to claim 3, wherein: The power supply module is configured to transmit a first square wave timing signal to the detection transistor unit and the reference transistor unit, wherein each clock cycle of the input signal in the first square wave timing signal includes: a first period having a first low-level signal and a second period having a first high-level signal, wherein a rising edge of the first high-level signal in the first square wave timing signal is located before a falling edge of a frame synchronization idle time Vporch; The power supply module is configured to provide a second square wave timing signal for transmission to the detection transistor unit, wherein each clock cycle of the first control signal in the second square wave timing signal includes: a first period having a second low-level signal and a second period having a second high-level signal; wherein a rising edge of the second high-level signal in the second square wave timing signal is located before a falling edge of a frame synchronization idle time Vporch; and The power supply module is configured to provide a third waveform timing signal for transmission to the reference transistor unit, wherein each clock cycle of the second control signal in the third waveform timing signal includes: a first period having a second low-level signal and a second period having a second high-level signal; wherein a rising edge of the second high-level signal in the third waveform timing signal is located before a falling edge of a frame synchronization idle time Vporch.

6. The brightness control device according to claim 2, wherein: The integrated circuit chip comprises: a signal acquisition module connected to the detection transistor unit and the reference transistor unit, and a signal processing module connected to the signal acquisition module; The signal acquisition module is configured to acquire the first electrical signal and the second electrical signal, and send the first electrical signal and the second electrical signal to the signal processing module; The signal processing module is configured to obtain a corresponding electric signal difference based on the first electric signal and the second electric signal; and generate a brightness detection value of the light to be measured based on the electric signal difference.

7. The brightness control device according to claim 6, wherein: The signal processing module is configured to convert the electrical signal difference into a brightness detection value of the light to be measured according to the following relationship; ； in, Indicates the brightness detection value of the light to be measured, It represents the electrical signal difference corresponding to the light intensity of the light to be measured, a is the first coefficient measured in advance, b is the second coefficient measured in advance, and c is the third coefficient measured in advance.

8. The brightness control device according to claim 6, wherein: The signal acquisition module is connected to the second end of the detection transistor unit and the second end of the reference transistor unit, and is configured to acquire the first electrical signal from the second end of the detection transistor unit and acquire the second electrical signal from the second end of the reference transistor unit.

9. The brightness control device according to claim 8, wherein: The integrated circuit chip includes: a fourth pin and a fifth pin, the signal acquisition module is connected to the second end of the detection transistor unit through the fourth pin and a fourth lead line, and the signal acquisition module is connected to the second end of the reference transistor unit through the fifth pin and a fifth lead line; the signal acquisition module is configured to acquire the first electrical signal through the fourth pin and acquire the second electrical signal through the fifth pin.

10. The brightness control device according to claim 9, wherein: The signal generating module is configured to obtain a first driving signal corresponding to the brightness detection value of the light to be measured according to a pre-stored mapping relationship between brightness values ​​and driving signals.

11. The brightness control device according to claim 1, wherein: The control module is configured to connect the light driving module to the application processor and disconnect the light driving module from the signal generating module when the detection module detects a signal change at the signal output terminal of the application processor; Alternatively, the control module is configured to connect the light-emitting driving module to the signal generating module and disconnect the light-emitting driving module from the application processor when the detection module detects that no signal change occurs at the signal output end of the application processor.

12. A display device comprising: A display panel and a brightness control device according to any one of claims 1 to 11, wherein: The display panel includes: a display area, and a binding area and a frame area located on opposite sides of the display area in a first direction; The light detection circuit in the brightness control device is arranged in the frame area, and the integrated circuit chip in the brightness control device is bound and connected to the binding area.

13. The display device according to claim 12, wherein: The binding area includes: a first central area and a timing signal routing area located on at least one side of the first central area in the second direction; the timing signal routing area includes: a first lead area, a first boundary located in the second direction close to the first central area, and a second boundary opposite to the first boundary; the first lead area is located on at least one of a side of the first boundary close to the second boundary in the timing signal routing area and a side of the second boundary in the timing signal routing area close to the first boundary; the first lead area includes: at least one of a first lead line, a second lead line, and a third lead line; the second direction intersects the first direction; The integrated circuit chip includes: a first pin, a second pin and a third pin, wherein the integrated circuit chip is connected to the first end of the detection transistor unit through the first pin and the first lead line, and is connected to the first end of the reference transistor unit through the first pin and the first lead line, the integrated circuit chip is connected to the control end of the detection transistor unit through the second pin and the second lead line, and the integrated circuit chip is connected to the control end of the reference transistor unit through the third pin and the third lead line; the integrated circuit chip is configured to provide an operating voltage to the detection transistor unit and the reference transistor unit through the first pin, the second pin, the third pin, the first lead line, the second lead line and the third lead line.

14. The display device according to claim 13, wherein: The binding area further includes, along the second direction: a touch signal routing area located between the first central area and the timing signal routing area in the second direction, the touch signal routing area including: a second lead area, a first boundary close to the first central area in the second direction, and a second boundary opposite to the first boundary, the second lead area being located on a side of the second boundary within the touch signal routing area close to the first boundary, the second lead area including: at least one of a fourth lead line and a fifth lead line; The integrated circuit chip includes: a fourth pin and a fifth pin, wherein the integrated circuit chip is connected to the second end of the detection transistor unit through the fourth pin and the fourth lead line, and the integrated circuit chip is connected to the second end of the reference transistor unit through the fifth pin and the fifth lead line; the integrated circuit chip is configured to collect a first electrical signal through the fourth pin and the fourth lead line, and to collect a second electrical signal through the fifth pin and the fifth lead line.

15. The display device according to claim 14, wherein The number of the timing signal routing areas is two, and the number of the touch signal routing areas is two.

16. The display device according to claim 14, wherein: The display panel further includes: a cutting area provided on a peripheral side of the binding area, the cutting area including: at least one cutting line, the shape of the at least one cutting line being the same as the outline of the binding area; The first pin is connected to the first end of the detection transistor unit and the first end of the reference transistor unit through the first lead line located in the first lead area of ​​the timing signal routing area away from the cutting line, the second pin is connected to the control end of the detection transistor unit through the second lead line located in the first lead area of ​​the timing signal routing area away from the cutting line, and the third pin is connected to the control end of the reference transistor unit through the third lead line located in the first lead area of ​​the timing signal routing area away from the cutting line.

17. The display device according to claim 12, further comprising: A light emitting device, wherein the light emitting device is located on a display side of a display panel, or the light emitting device is located on a side opposite to the display side of the display panel, or the light emitting device is located on a peripheral side of the display panel.

18. A brightness control method, applied to the brightness control device according to any one of claims 1 to 11, the brightness control method comprising: Detecting the light intensity of the light to be measured corresponding to the environment in which the display panel is located, and generating an electrical signal corresponding to the light intensity of the light to be measured; A brightness detection value of the light to be measured is generated based on an electrical signal corresponding to the light intensity of the light to be measured, and the display brightness of the display panel is adjusted based on the brightness detection value of the light to be measured.

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