Display panel and display driver

Abstract

A display panel and a display driver, the display panel includes a display circuit, a transmission circuit, a plurality of sensing circuits and the display driver. The transmission circuit is used to supply power to the display circuit. The sensing circuits are arranged in the display panel corresponding to the positions of the display circuit, and are formed by the same material as the transmission circuit. The display driver is coupled to the display circuit, the transmission circuit and the sensing circuit, and is used to detect a plurality of sensing impedances of the plurality of sensing circuits to generate a plurality of compensation signals. The display driver is used to control the display circuit according to the plurality of compensation signals. Accordingly, the temperature changes at various positions in the display panel can be detected.

Description

Technical Field

[0001] This disclosure relates to display technology, and in particular to a display panel and display driver. Background Technology

[0002] With the rapid advancement of electronic technology, display panels have been widely used in people's lives, such as in smartphones and computers. Display panels control the brightness of each pixel based on image signals to present the corresponding image. However, due to undesirable factors such as temperature, transmission delay, or differences in component performance, the drive signals of display panels need to be compensated accordingly, and compensation technology directly affects the performance and quality of the display panel. Summary of the Invention

[0003] This disclosure relates to a display panel, comprising a display circuit, a transmission circuit, multiple sensing circuits, and a display driver. The transmission circuit supplies power to the display circuit. The multiple sensing circuits are disposed in the display panel corresponding to the display circuit, and the multiple sensing circuits and the transmission circuit are formed of the same material. The display driver is coupled to the display circuit, the transmission circuit, and the sensing circuits, and is used to detect multiple sense impedances of the multiple sensing circuits to generate multiple compensation signals. The display driver controls the display circuit according to the multiple compensation signals.

[0004] In one embodiment, the plurality of sensing circuits are disposed at a plurality of locations in the display panel corresponding to the edges of the display circuits.

[0005] In one embodiment, at least a portion of each of the plurality of sensing circuits is located within the effective display area of ​​the display panel.

[0006] In one embodiment, at least a portion of each of the plurality of sensing circuits includes an L-shaped wiring structure.

[0007] In one embodiment, the plurality of sensing circuits are substantially the same length.

[0008] In one embodiment, the display driver is used to determine changes in the plurality of sensed impedances in order to generate the corresponding plurality of compensation signals.

[0009] In one embodiment, the wiring structure of the plurality of sensing circuits is symmetrical to each other.

[0010] In one embodiment, the display driver includes a current detector and a voltage detector. The current detector and the voltage detector are connected in parallel with one of the plurality of sensing circuits via different loops, so that the display driver can calculate the impedance value of one of the plurality of sensing circuits.

[0011] In one embodiment, the display driver is used to adjust the duty cycle of the gamma value, pixel drive signal, or backlight control signal according to the plurality of compensation signals.

[0012] In one embodiment, the transmission circuit and the plurality of sensing circuits are formed of indium tin oxide.

[0013] This disclosure also relates to a display driver, comprising a detection circuit, a conversion circuit, and a compensation circuit. The detection circuit is coupled to a plurality of sensing circuits in a display panel to detect a plurality of sensing impedances of the plurality of sensing circuits. The plurality of sensing circuits and the transmission circuit in the display panel are formed of the same material, and the transmission circuit supplies power to the display circuit of the display panel. The conversion circuit is coupled to the detection circuit to calculate a plurality of detected temperature values ​​based on the plurality of sensing impedances. The compensation circuit is coupled to the conversion circuit and the display circuit to generate a plurality of compensation signals based on the plurality of detected temperature values, thereby controlling the display circuit according to the plurality of compensation signals.

[0014] In one embodiment, the plurality of sensing circuits are disposed at a plurality of locations in the display panel corresponding to the edges of the display circuits.

[0015] In one embodiment, at least a portion of each of the plurality of sensing circuits is located within the effective display area of ​​the display panel.

[0016] In one embodiment, at least a portion of each of the plurality of sensing circuits includes an L-shaped wiring structure.

[0017] In one embodiment, the plurality of sensing circuits are substantially the same length.

[0018] In one embodiment, a detection circuit is used to detect changes in each of the plurality of induced impedances to generate corresponding plurality of compensation signals.

[0019] In one embodiment, the wiring structure of the plurality of sensing circuits is symmetrical to each other.

[0020] In one embodiment, the detection circuit includes a current detector and a voltage detector. The current detector and the voltage detector are connected in parallel with one of the plurality of sensing circuits via different loops, so that the detection circuit can calculate the impedance value of one of the plurality of sensing circuits.

[0021] In one embodiment, the display driver is used to adjust the duty cycle of the gamma value, pixel drive signal, or backlight control signal according to the plurality of compensation signals.

[0022] In one embodiment, the transmission circuit and the plurality of sensing circuits are formed of indium tin oxide.

[0023] This disclosure utilizes the special material properties of the sensing circuit within the display panel for temperature detection. It can detect temperature changes at various locations within the display panel without requiring additional processes or taking up extra space, effectively balancing product performance, cost, and size. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a display panel according to some embodiments of the present disclosure;

[0025] Figure 2 This is a schematic diagram of a display driver according to some embodiments of the present disclosure;

[0026] Figure 3A This is a schematic diagram of a display panel according to some embodiments of the present disclosure;

[0027] Figure 3B This is a schematic diagram of a detection unit according to some embodiments of the present disclosure;

[0028] Figure 4A This is a schematic diagram of a display panel according to some embodiments of the present disclosure;

[0029] Figure 4B This is a schematic diagram of a detection unit according to some embodiments of the present disclosure;

[0030] Figure 4C This is a partially enlarged schematic diagram of a display panel according to some embodiments of the present disclosure;

[0031] Figure 5 This is a partial circuit diagram of a display panel according to some embodiments of the present disclosure;

[0032] Figure 6 This is a partial circuit diagram of a display panel according to some embodiments of the present disclosure;

[0033] Figure 7 This is a schematic diagram of gamma curves according to some embodiments of the present disclosure.

[0034] [Symbol Explanation]

[0035] 100: Display panel

[0036] 110: Display circuit

[0037] 120: Transmission circuit

[0038] 130: Display driver

[0039] 131: Detection Circuit

[0040] 132: Conversion Circuit

[0041] 133: Compensation Circuit

[0042] 140A: Induction Circuit

[0043] 140B: Induction Circuit

[0044] 140C: Induction Circuit

[0045] 140D: Induction Circuit

[0046] 300: Display panel

[0047] 310: Display driver

[0048] 320A: Induction Circuit

[0049] 320B: Induction Circuit

[0050] 320C: Induction Circuit

[0051] 320D: Induction Circuit

[0052] 330: Detection Unit

[0053] 331: Current Detector

[0054] 332: Voltage Detector

[0055] 333: Induction Circuit

[0056] 400: Display panel

[0057] 410: Display driver

[0058] 420A: Induction Circuit

[0059] 420B: Induction Circuit

[0060] 420C: Induction Circuit

[0061] 420D: Induction Circuit

[0062] 421: Low Impedance Path

[0063] 422: High Impedance Path

[0064] 430: Detection Unit

[0065] 431: Current Detector

[0066] 432: Voltage Detector

[0067] 433: Induction Circuit

[0068] 500: Display panel

[0069] 510: Backlight Circuit

[0070] 520: Drive circuit

[0071] 521: Gate Driver

[0072] 522: Gamma correction circuit

[0073] 523: Digital-to-Analog Converter

[0074] 524: Source Output Circuit

[0075] 600: Display panel

[0076] 610: Drive circuit

[0077] 611: Gate Driver

[0078] 612: Gamma correction circuit

[0079] 613: Digital-to-Analog Converter

[0080] 614: Source Output Circuit

[0081] 700: Gamma Curve

[0082] AA: Effective display area

[0083] C51: Capacitor

[0084] C52: Capacitor

[0085] C61: Capacitor

[0086] ELVDD: Voltage signal

[0087] ELVSS: Voltage signal

[0088] GVDDP: Positive Reference Voltage

[0089] GVDDN: Negative Reference Voltage

[0090] I41: Current

[0091] I42: Current

[0092] I43: Current

[0093] PX: Pixel unit

[0094] S31: Impedance signal

[0095] S32: Temperature signal

[0096] S33: Compensation signal

[0097] Spwm: Control signal

[0098] Snode: Node signal

[0099] Sdata: Data signal

[0100] T51: Transistor Switch

[0101] T61: Transistor Switch

[0102] T62: Transistor Switch

[0103] Vin: Input voltage

[0104] VGH: Voltage signal

[0105] VGL: Voltage signal

[0106] VGMP: Positive Reference Voltage

[0107] VGSP: Negative Reference Voltage Detailed Implementation

[0108] The following describes several embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and elements will be shown in the drawings in a simple schematic manner.

[0109] In this document, when an element is referred to as a “connection” or “coupled,” it may mean an “electrical connection” or “electrical coupling.” “Connection” or “coupled” can also be used to indicate the operation or interaction between two or more elements. Furthermore, although terms such as “first,” “second,” etc., are used herein to describe different elements, these terms are merely used to distinguish elements or operations described using the same technical terminology. Unless the context clearly indicates otherwise, these terms do not specifically refer to or imply any order or sequence, nor are they intended to limit the invention.

[0110] With advancements in display technology, high-speed applications of display panels are becoming increasingly common, and the electronic components within these panels are constantly being improved to enhance operational and responsiveness. However, as electronic components evolve, their sensitivity to temperature also increases. To prevent different areas of the display panel from having varying temperatures, which could affect the uniformity of the displayed image, the display panel can sense the temperature of different areas and compensate for the image based on the sensing results.

[0111] Figure 1The diagram shown is a schematic representation of an embodiment of a display panel 100 according to this disclosure. The display panel 100 includes a display circuit 110, a transmission circuit 120, a display driver 130, and sensing circuits 140A-140D. The display circuit 110 includes a plurality of pixel units PX for displaying an image. In one embodiment, the display circuit 110 may be a liquid crystal display (LCD), such as a thin-film transistor liquid crystal display (TFT-LCD). In other embodiments, the display circuit 110 may be an organic light-emitting diode (OLED) circuit or other types of display circuits. Since those skilled in the art can understand the internal structure and driving principle of the display circuit, further details are omitted here.

[0112] The display driver 130 is coupled to the transmission circuit 120 and the sensing circuits 140A-140D, and is used to supply power and provide drive signals to the display circuit 110 through the transmission circuit 120. The sensing circuits 140A-140D are disposed in the display panel 100 at positions corresponding to the display circuit 110, such as adjacent to the edge of the display circuit 110 or partially overlapping with the display circuit 110. The sensing circuits 140A-140D are used to sense the temperature or temperature change at different locations on the display panel 100, and the display driver 130 compensates the drive signals to be transmitted to the display circuit 110 according to the temperature or temperature change.

[0113] In this embodiment, the transmission circuit 120 and the sensing circuits 140A-140D are formed of the same material, such as indium tin oxide (ITO). Indium tin oxide has special material properties; the change in its impedance value has a predictable and specific relationship with temperature changes. Therefore, the display driver 130 can estimate the temperature change by measuring the change in impedance value. In one embodiment, the display driver 130 first obtains the impedance or voltage change from the sensing circuits 140A-140D, calculates the temperature value or temperature change value, and then calculates the compensation signal using a lookup table or a predefined characteristic formula.

[0114] For example, the display driver 130 adjusts the driving voltage supplied to the display circuit 110 according to the compensation signal to control the display circuit. Furthermore, the display driver 130 provides different driving voltages to different pixel units PX in different areas of the display circuit 110. In another embodiment, the display driver 130 adjusts the pixel value or grayscale value of the image signal according to the compensation signal.

[0115] This disclosure utilizes the thermal characteristics of sensing circuits 140A to 140D in the display panel 100 for temperature sensing. By utilizing the impedance-temperature characteristic relationship, sensing circuits 140A to 140D are arranged in different areas of the display panel 10, so that the display driver 130 can detect temperature changes at different locations.

[0116] The number and position of the sensing circuits 140A-140D can be adjusted as needed. In one embodiment, the sensing circuits 140A-140D are disposed in the display panel 100 at positions corresponding to the edges of the display circuit 110, for example, at the four corners adjacent to the display circuit 110. Depending on the multiple positions of the sensing circuits 140A-140D, the display driver 130 can divide the display circuit 110 into multiple regions for separate compensation. For example, if the sensing circuits 140A-140D are disposed at the four corners of the display circuit 110, the display panel 100 can be divided into at least four regions. The display driver 130 will determine the temperature of different regions based on the sensing circuits 140A-140D and generate different compensation signals.

[0117] In some embodiments, at least a portion of each sensing circuit 140A-140D is located within the active display area (AA area) of the display panel 100. The active display area is the area of ​​the display panel 100 used to display images. Figure 1 The area marked by the display circuit 110 can be considered as the effective display area. In other embodiments, the sensing circuits 140A to 140D may be located entirely within the effective display area or entirely outside the effective display area.

[0118] In some embodiments, the display driver 130 may divide the display circuitry 110 into multiple regions "more than the number of sensing circuits," for example, dividing it into 25 regions, where each of the four corner regions corresponds to a sensing circuit. The table below is a schematic table illustrating the division of the effective display area of ​​the display panel into multiple regions. The table contains 25 columns X11-X15, X21-X25, X31-X35, X41-X45, and X51-X55, with each column representing a region.

[0119] X11 X12 X13 X14 X15 X21 X22 X23 X24 X25 X31 X32 X330 X34 X35 X41 X42 X43 X44 X45 X51 X52 X53 X54 X55

[0120] Please refer to the table above and please match it with... Figure 1The sensing circuits 140A to 140D are located at the four corners of the effective display area. Therefore, based on the sensing impedance of the sensing circuits 140A to 140D, the display driver 130 can calculate the temperatures of the four areas X11, X15, X51, and X54. The display driver 130 can use interpolation to calculate the temperatures of other areas to accurately compensate for different degrees of each area. Since those skilled in the art will understand the operation of interpolation, it will not be described in detail here.

[0121] In some embodiments, each sensing circuit 140A-140D includes an L-shaped wiring structure. Figure 1 The diagram shown is for illustrative purposes only; specific embodiments will be described in subsequent paragraphs and accompanying drawings. The L-shaped wiring pattern is located within the effective display area of ​​the display panel 100.

[0122] As previously described, this disclosure utilizes the material properties of the sensing circuits 140A-140D within the display panel 100 for temperature detection. The sensing circuits 140A-140D can be fabricated in the same process as the transmission circuit 120, without needing to be connected to the display circuit 110, but can be easily formed / configured at different locations within the display panel 100 to facilitate accurate temperature detection, thereby enabling more precise compensation of the display driver 130.

[0123] Figure 2 This is a schematic diagram of a display driver 130 according to a partial embodiment of the present disclosure. In some embodiments, the display driver 130 includes a detection circuit 131, a conversion circuit 132, and a compensation circuit 133. The detection circuit 131 is coupled to the sensing circuits 140A-140D to detect the induced impedance of each sensing circuit 140A-140D respectively and generate an impedance signal S31.

[0124] The conversion circuit 132 is coupled to the detection circuit 131 to receive the impedance signal S31. The conversion circuit 132 calculates the corresponding detection temperature value (e.g., 60 degrees Celsius) based on the induced impedance detected by the detection circuit 131, thereby generating the temperature signal S32. In one embodiment, the conversion circuit 132 stores temperature-impedance characteristic data for each of the sensing circuits 140A to 140D, enabling the calculation of the detection temperature value using calculation or table lookup.

[0125] The compensation circuit 133 is coupled to the conversion circuit 132 and the display circuit 110. It generates a corresponding compensation signal S33 based on the detected temperature value calculated by the conversion circuit 132, and controls the display circuit 110 according to the compensation signal S33. For example, when it is determined that the temperature has increased, causing the brightness of the pixel unit PX to become more pronounced, the compensation circuit 133 can generate the compensation signal S33 to reduce the brightness in response to the temperature change. This "drive signal adjusted according to temperature change" is the compensation signal and can be used to adjust / update the original drive signal. In one embodiment, the compensation circuit 133 adjusts the duty cycle of the gamma value, pixel drive signal, or backlight control signal applied to the display panel 100 according to the compensation signal S33, details of which will be described in subsequent paragraphs.

[0126] In some embodiments, the display driver 130 further includes a driving circuit (not shown) coupled to the compensation circuit 133 to generate or adjust a driving signal according to the compensation signal S33 to control the rendering brightness of each pixel unit PX.

[0127] The following describes various embodiments of the induction circuit and the methods for determining the induction impedance. Figure 3A This is a schematic diagram of a display panel 300 according to a partial embodiment of the present disclosure, which can be used to implement... Figure 1 The display panel 100 is shown. For the sake of brevity, the accompanying drawings are as follows: Figure 3A The display circuit and conductive circuit are omitted; only the display driver 310 and the sensing circuits 320A to 320D in the conductive circuit are shown. Furthermore, Figure 3A The position of the effective display area AA is shown in the figure to present the relative positions of the sensing circuits 320A to 320D and the effective display area AA.

[0128] Please see Figure 3A As shown, in this embodiment, the lengths of each sensing circuit 320A-320D are substantially the same, and the wiring pattern can be symmetrical (e.g., left-right symmetrical). In other words, the wires coupled to the display driver 310 for each sensing circuit 320A-320D are of the same length. Under the same initial temperature conditions, each sensing circuit 320A-320D will have the same sensing impedance. Therefore, the display driver 310 does not need to calculate the "actual impedance value" of each sensing circuit 320A-320D, but can generate a corresponding compensation signal by judging the "change in sensing impedance" of each sensing circuit 320A-320D.

[0129] In some embodiments, the detection circuit of the display driver 310 (such as...) Figure 2 (As shown) It contains multiple detection units, each of which is used to detect the corresponding sensing circuits 320A to 320D. Figure 3BThis is a schematic diagram of one of the detection units 330 in a partial embodiment of this disclosure, used to detect the sensing impedance of the sensing circuit 333. The sensing circuit 333 may be... Figure 1 The induction circuits 122A to 122D shown, or Figure 3A Any of the induction circuits 320A to 320D shown.

[0130] like Figure 3B As shown, the detection unit 330 includes a current detector 331 and a voltage detector 332. The current detector 331 is connected in parallel with the corresponding sensing circuit 333 and is used to provide a detection current. The voltage detector 332 is also connected in parallel with the corresponding sensing circuit 333 to detect the voltage across the sensing circuit 333. Based on the provided detection current and the detected voltage, the display driver 310 can calculate the impedance value of the sensing circuit 333.

[0131] exist Figure 3A and Figure 3B In the embodiments, since the lengths of the sensing circuits 320A to 320D are substantially the same, the "impedance change of the sensing impedance" of the sensing circuits 320A to 320D will not differ due to the "difference in wire length".

[0132] Figures 4A to 4C This is a schematic diagram of a display panel with "sensor circuits of different lengths". Figure 4A This is a schematic diagram of the display panel 400 in one embodiment. Figure 4B This is a schematic diagram of the detection unit 430 in one embodiment. Figure 4C This is a magnified view of a portion of the display panel 400. (And...) Figure 3A resemblance, Figure 4A The display circuit and conduction circuit are omitted in the figure; only the display driver 410 and the sensing circuits 420A to 420D in the conduction circuit are shown.

[0133] Please see Figure 4A and Figure 4B Since the wires of sensing circuits 420A to 420D coupled to display driver 310 have different lengths, the sensing impedance detected by sensing unit 430 will be affected by the length of the wires. For example, since the distance between sensing circuit 420D and display driver 410 is relatively far, the wire impedance between sensing circuit 420D and display driver 410 will affect the detection result and may not be able to accurately reflect the temperature of the display area.

[0134] Continuing from the above, in order to detect the temperature of the area corresponding to the sensing circuit 420D, in this embodiment, the current detector 431 and voltage detector 432 included in the detection unit 430 are connected in parallel with the sensing circuit 433 in different circuits, so that the display driver 410 can calculate the impedance value of the sensing circuit 433. The sensing circuit 433 may be... Figure 1 The induction circuits 122A to 122D shown, or Figure 3A Any of the induction circuits 320A to 320D shown.

[0135] like Figure 4B As shown, current detector 431 provides current I41 through the first loop, while voltage detector 432 detects the voltage across induction circuit 433 through the second loop. Since the impedance of voltage detector 432 is much greater than that of induction circuit 433, almost all of current I41 flows through induction circuit 433. In other words, current I43 approaches zero, and current I42 is equal to current I41. Therefore, by connecting two different loops in parallel with induction circuit 433, the current and voltage of induction circuit 433 can be accurately obtained, and the impedance value of induction circuit 433 can be calculated without being affected by the impedance of other wires.

[0136] Please see Figure 4C As shown, in one embodiment, the sensing circuit (described herein by example as sensing circuit 420B) may include a low-impedance path 421 and a high-impedance path 422. The low-impedance path 421 may be... Figure 4B The first loop shown is used to transmit current I41, i.e., to provide the induced current. The high-impedance path 422 can be... Figure 4B The second circuit shown is used for voltage measurement, so the current I42 will be much smaller than the current I41.

[0137] The display panel disclosed herein can be used to implement different types of displays, such as LCD panels or OLED panels. Figure 5 This is a partial circuit diagram of a display panel 500 according to a portion of an embodiment of this disclosure. Figure 5 As shown, the display panel 500 is an LCD panel, including a backlight circuit 510, a driving circuit 520, and pixel units PX. The backlight circuit 510 controls the current supplied to the backlight element according to the input voltage Vin and the control signal Spwm to control the brightness of the backlight.

[0138] The driving circuit 520 includes a gate driver 521, a gamma correction circuit 522, a digital-to-analog converter 523, and a source output circuit 524. The gate driver 521 (Gate Driver on Array, GOA) is used to drive the gate of the transistor switch T51 in the pixel unit PX according to the voltage signals VGH and VGL.

[0139] The gamma correction circuit 522 is used to correct the display effect of the pixel unit PX according to the node signal Snode and the positive reference voltage GVDDP and negative reference voltage GVDDN (e.g., change the gamma value or adjust the gamma curve) to ensure that the image meets the expected color and brightness.

[0140] The digital-to-analog converter 523 converts the data signal Sdata from digital to analog format. The source driver on panel 524, coupled to the digital-to-analog converter 523, controls the source of the transistor switch in the pixel unit PX to provide the current required by the pixel unit PX. The voltage stored in capacitors C51 and C52 in the pixel unit PX corresponds to the pixel value and / or transmittance.

[0141] Figure 6 This is a partial circuit diagram of a display panel 600 according to a partial embodiment of the present disclosure. The display panel 600 includes a driving circuit 610 and pixel units PX. In this embodiment, the display panel is an OLED panel, and the pixel units PX determine the brightness generated based on the input voltage Vin and voltage signals ELVDD and ELVSS.

[0142] like Figure 6 As shown, the driving circuit 610 includes a gate driver 611, a gamma correction circuit 612, a digital-to-analog converter 613, and a source output circuit 614. The gate driver 611 is used to drive the gates of transistor switches T61 and T62 in the pixel unit PX according to the voltage signals VGH and VGL, so as to control the current of the pixel unit PX.

[0143] The gamma correction circuit 612 is used to correct the display effect of the pixel unit PX according to the node signal Snode and the positive reference voltage VGMP and negative reference voltage VGSP (e.g., change the gamma value or adjust the gamma curve) to ensure that the image meets the expected color and brightness.

[0144] The digital-to-analog converter 613 is used to convert the data signal Sdata from digital format to analog format. The source output circuit 614 (coupled to the digital-to-analog converter 613) controls the source of the transistor switch T61 in the pixel unit PX. The voltage stored in the capacitor C61 in the pixel unit PX corresponds to the pixel value.

[0145] Depending on the type of display panel, the display driver can be compensated in different ways. As mentioned earlier, the "compensation signal" can be a drive signal adjustment value corresponding to different temperatures, such as the gamma value, the duty cycle of the pixel drive signal, or the backlight control signal. The gamma value can be determined by the aforementioned node signal Snode, the positive reference voltage GVDDP / VGMP, or the negative reference voltage GVDDN / VGSP. The pixel drive signal can be determined by the aforementioned voltage signals VGH / VGL, ELVDD / ELVSS, or the input voltage Vin. The duty cycle of the backlight control signal can be determined by the aforementioned control signal Spwm.

[0146] Figure 7 This is a schematic diagram of a gamma curve 700 according to a partial embodiment of the present disclosure. The gamma curve 700 defines the relationship between the intensity of an input signal (e.g., pixel value) and the brightness of an output signal. Different gamma curves correspond to different gamma values. In one embodiment, the display driver can adjust the gamma curve by changing the gamma value. In other embodiments, the display driver can adjust the gamma curve / gamma value by setting different gamma voltage nodes 710. Figure 7 The position of gamma voltage node 710 in the diagram is for illustrative purposes only; in reality, it can be set to correspond to any input signal strength. The "gamma voltage node" is a reference voltage at a specific position in the gamma curve, which can be determined by the aforementioned node signal Snode. Therefore, by changing the node signal Snode at different positions, the gamma curve / gamma value can be adjusted.

[0147] The components, method steps, or technical features in the foregoing embodiments can be combined with each other, and are not limited to the order of textual description or the order of presentation of the drawings in this disclosure.

[0148] Although the present disclosure has been described above with reference to embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims.

Claims

1. A display panel, characterized in that, Include: A display circuit; A transmission circuit for supplying power to the display circuit; Multiple sensing circuits are disposed in the display panel at positions corresponding to the display circuit, wherein the multiple sensing circuits and the transmission circuit are formed of the same material; as well as A display driver is coupled to the display circuit, the transmission circuit, and the plurality of sensing circuits, and is used to detect a plurality of sensing impedances of the plurality of sensing circuits to generate a plurality of compensation signals, wherein the display driver is used to control the display circuit according to the plurality of compensation signals.

2. The display panel as described in claim 1, characterized in that, The plurality of sensing circuits are disposed at multiple locations in the display panel corresponding to the edges of the display circuits.

3. The display panel as described in claim 2, characterized in that, At least a portion of each of the plurality of sensing circuits is located within an effective display area of ​​the display panel.

4. The display panel as described in claim 3, characterized in that, At least a portion of each of the plurality of sensing circuits includes an L-shaped wiring structure.

5. The display panel as described in claim 1, characterized in that, The lengths of the plurality of sensing circuits are substantially the same.

6. The display panel as described in claim 5, characterized in that, The display driver is used to determine the changes in the plurality of sensed impedances in order to generate the corresponding plurality of compensation signals.

7. The display panel as described in claim 5, characterized in that, The wiring structure of the multiple sensing circuits is symmetrical to each other.

8. The display panel as described in claim 1, characterized in that, The display driver includes a current detector and a voltage detector, which are connected in parallel with one of the plurality of sensing circuits through different loops, so that the display driver can calculate the impedance value of one of the plurality of sensing circuits.

9. The display panel as claimed in claim 1, characterized in that, The display driver is used to adjust the duty cycle of a gamma value, a pixel drive signal, or a backlight control signal according to the plurality of compensation signals.

10. The display panel as claimed in claim 1, characterized in that, The transmission circuit and the plurality of sensing circuits are formed of indium tin oxide.

11. A display driver, characterized in that, Include: A detection circuit coupled to a plurality of sensing circuits in a display panel for detecting a plurality of sensing impedances of the plurality of sensing circuits, wherein the plurality of sensing circuits and a transmission circuit in the display panel are formed of the same material, and the transmission circuit is used to supply power to a display circuit in the display panel. A conversion circuit, coupled to the detection circuit, is used to calculate multiple detected temperature values ​​based on the multiple sense impedances; as well as A compensation circuit, coupled to the conversion circuit and the display circuit, is used to generate multiple compensation signals based on the multiple detected temperature values, and to control the display circuit based on the multiple compensation signals.

12. The display driver as claimed in claim 11, characterized in that, The plurality of sensing circuits are disposed at multiple locations in the display panel corresponding to the edges of the display circuits.

13. The display driver as claimed in claim 12, characterized in that, At least a portion of each of the plurality of sensing circuits is located within an effective display area of ​​the display panel.

14. The display driver as claimed in claim 13, characterized in that, At least a portion of each of the plurality of sensing circuits includes an L-shaped wiring structure.

15. The display driver as claimed in claim 11, characterized in that, The lengths of the plurality of sensing circuits are substantially the same.

16. The display driver as claimed in claim 15, characterized in that, The detection circuit is used to detect changes in each of the plurality of induced impedances in order to generate the corresponding plurality of compensation signals.

17. The display driver as claimed in claim 15, characterized in that, The wiring structure of the multiple sensing circuits is symmetrical to each other.

18. The display driver as claimed in claim 11, characterized in that, The detection circuit includes a current detector and a voltage detector, which are connected in parallel with one of the plurality of sensing circuits through different loops, so that the detection circuit can calculate the impedance value of one of the plurality of sensing circuits.

19. The display driver as claimed in claim 11, characterized in that, The display driver is used to adjust the duty cycle of a gamma value, a pixel drive signal, or a backlight control signal according to the plurality of compensation signals.

20. The display driver as claimed in claim 11, characterized in that, The transmission circuit and the plurality of sensing circuits are formed of indium tin oxide.

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