Driving chip and display device

Abstract

A driving chip (51) and a display device. The driving chip (51) comprises source driving pads (320), gate driving units (100), and at least two segment code driving pads (210). Each gate driving unit (100) comprises a gate driving pad (110) or a shift register driving pad (120). The gate driving pad (110) is connected to the gate of a transistor in a pixel driving circuit (52). The shift register driving pad (120) is connected to a shift register (55), and the shift register (55) is connected to the gate of a transistor in the pixel driving circuit (52). The pixel driving circuit (52) is connected to a pixel electrode (53). Each segment code driving pad (210) is connected to a segment code electrode (54). The segment code driving pads (210) are located on an input side (A1) and / or an output side (A2) of the driving chip (51); or, the segment code driving pads (210) are located on a first side (A3) and / or a second side (A4) of the driving chip (51). The first side (A3) is opposite to the second side (A4), and the input side (A1) is opposite to the output side (A2).

Description

Driving chip and display device

[0001] The present application claims priority to the Chinese patent application No. 202422266901.7, filed on September 14, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, for example, to a driving chip and a display device. BACKGROUND

[0003] Electronic paper screen is a display screen made by using electrophoretic display technology. By applying voltage to a plurality of pixel points, the movement of color electrophoretic particles in the electronic paper film is driven to realize image display. As a reflective display screen, electronic paper screen can maintain for a long time without continuous refreshing after image update, so the power consumption is very low. Due to its low power consumption, wide viewing angle, high contrast and eye protection, electronic paper screen is increasingly widely used in electronic price tags, electronic books, billboards and other fields.

[0004] According to different driving modes, electronic paper screen can be divided into dot matrix type and segment code type. Dot matrix type electronic paper screen usually has high resolution and is actively driven. The opening and closing of thin film transistors are controlled by gate traces, and the voltage of source traces is charged into the storage capacitor of the pixel driving circuit through row-by-row scanning to drive the movement of electrophoretic particles in electronic ink. Segment code type electronic paper screen usually has low resolution and is passively driven. The movement of electrophoretic particles in electronic ink is driven by directly applying electricity to the driving electrode of each segment code.

[0005] The existing electronic paper screen is driven and controlled by the driving chip of the screen. The driving chip of the screen receives the control signal and image data transmitted by the external circuit and converts them into the voltage waveform and control timing for refreshing the electronic paper screen. Therefore, for dot matrix type electronic paper screen, a driving chip for dot matrix display is needed for driving, and for segment code type electronic paper screen, a driving chip for segment code display is needed for driving.

[0006] Since the existing dot matrix type driving chip does not support segment code type display, when it is necessary to add segment code display in dot matrix type electronic paper product, in order to realize the connection with the segment code electrode, an additional segment code type driving chip is needed. Setting two driving chips of different types on the same electronic paper product requires setting the corresponding boost circuit, communication circuit and voltage stabilizing circuit, which will increase the number of electronic components, complicate the circuit structure, and thus lead to high power consumption and high cost of electronic paper product. SUMMARY

[0007] The application provides a driving chip and a display device to solve the problem of complex circuit structure and high cost when pixel electrodes and segment code electrodes are arranged in the display device.

[0008] The application provides a driving chip, which comprises:

[0009] a source driving pad connected with the source of the transistor in the pixel driving circuit;

[0010] a gate driving unit comprising a gate driving pad or a shift register driving pad; the gate driving pad is connected with the gate of the transistor in the pixel driving circuit, the shift register driving pad is connected with a shift register, the shift register is connected with the gate of the transistor in the pixel driving circuit; the pixel driving circuit is connected with a pixel electrode;

[0011] at least two segment code driving pads; the segment code driving pads are connected with segment code electrodes; the segment code driving pads are located at the input side and / or the output side of the driving chip; or, the segment code driving pads are located at the first side and / or the second side of the driving chip; wherein, the first side is opposite to the second side, the input side is opposite to the output side, and the first side is adjacent to the input side and the output side.

[0012] Optionally, the segment code driving pads are located at the input side and / or the output side of the driving chip and are arranged in a first direction;

[0013] Or, the segment code driving pads are located at the first side and / or the second side of the driving chip and are arranged in a second direction; wherein, the first direction is the direction in which the first side points to the second side, and the second direction is the direction in which the input side points to the output side.

[0014] Optionally, a part of the gate driving units form a first pad group, and another part of the gate driving units form a second pad group; a part of the segment code driving pads form a third pad group, and another part of the segment code driving pads form a fourth pad group;

[0015] The gate driving unit is located at the output side, and the third pad group and the fourth pad group are located between the first pad group and the second pad group;

[0016] Or, the gate driving unit is located at the input side, the third pad group is located at the output side, at least part of the segment code driving pads in the third pad group are located in a first corner area formed by the output side and the first side, the fourth pad group is located at the output side, and at least part of the segment code driving pads in the fourth pad group are located in a second corner area formed by the output side and the second side.

[0017] Optionally, the driving chip further comprises a frame electrode driving pad; the frame electrode driving pad is connected with the frame electrode, the source electrode driving pad is connected with the data line, and the data line is connected with the pixel driving circuit.

[0018] The frame electrode driving pad and the source electrode driving pad are located between the third pad group and the fourth pad group.

[0019] Optionally, a part of the number of the gate driving units form a first pad group, and another part of the number of the gate driving units form a second pad group; a part of the number of the segment code driving pads form a third pad group, and another part of the number of the segment code driving pads form a fourth pad group.

[0020] The gate driving units are located on the output side, the third pad group is located on the input side, and at least part of the number of the segment code driving pads in the third pad group are located in a third corner area formed by the input side and the first side, the fourth pad group is located on the input side, and at least part of the number of the segment code driving pads in the fourth pad group are located in a fourth corner area formed by the input side and the second side.

[0021] Alternatively, the gate driving units are located on the input side, and the segment code driving pads are located between the first pad group and the second pad group.

[0022] Optionally, the driving chip further comprises an input pad; the input pad is connected with the flexible circuit board; and the input pad is located between the third pad group and the fourth pad group.

[0023] Optionally, the driving chip further comprises:

[0024] a gate driving circuit or a shift register driving circuit; the gate driving circuit is connected with the gate driving pad, and the shift register driving circuit is connected with the shift register driving pad.

[0025] a segment code driving circuit; the segment code driving circuit is connected with the segment code driving pad.

[0026] Optionally, the driving chip further comprises:

[0027] a segment code driving data storage unit; the segment code driving data storage unit is connected with the segment code driving circuit, and the segment code driving data storage unit is configured to store segment code driving data.

[0028] The display device provided by the embodiment of the present application comprises the driving chip, the pixel driving circuit, the pixel electrode and the at least one segment code electrode according to any one of the embodiments of the present application.

[0029] The driving chip comprises a gate driving unit, the gate driving unit comprises a gate driving pad, the gate driving pad is connected with the gate of the transistor in the pixel driving circuit; or, the gate driving unit comprises a shift register driving pad, the display device further comprises a shift register, the shift register driving pad is connected with the shift register, and the shift register is connected with the gate of the transistor in the pixel driving circuit.

[0030] Optionally, the display device is divided into a display area and a non-display area; the driving chip and the shift register are located in the non-display area.

[0031] The display area is divided into a first sub-area and a second sub-area; the pixel driving circuit and the pixel electrode are located in the first sub-area, and the segment code electrode is located in the second sub-area. BRIEF DESCRIPTION OF DRAWINGS

[0032] FIG. 1 is a structural schematic diagram of a driving chip provided by the embodiment of the present application;

[0033] FIG. 2 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0034] FIG. 3 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0035] FIG. 4 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0036] FIG. 5 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0037] FIG. 6 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0038] FIG. 7 is a structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0039] FIG. 8 is a circuit structural schematic diagram of a driving chip provided by the embodiment of the present application;

[0040] FIG. 9 is a circuit structural schematic diagram of another driving chip provided by the embodiment of the present application;

[0041] FIG. 10 is a structural schematic diagram of a display device provided by the embodiment of the present application;

[0042] FIG. 11 is a structural schematic diagram of another display device provided by the embodiment of the present application. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this application.

[0044] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] This application provides a driver chip. Figure 1 is a schematic diagram of the structure of a driver chip provided in this application. Referring to Figure 1, the driver chip includes:

[0046] The source drive pad 320 is connected to the source of the transistor in the pixel drive circuit;

[0047] The gate driving unit 100 includes a gate driving pad 110 or a shift register driving pad 120; the gate driving pad 110 is connected to the gate of the transistor in the pixel driving circuit, the shift register driving pad 120 is connected to the shift register, and the shift register is connected to the gate of the transistor in the pixel driving circuit; the pixel driving circuit is connected to the pixel electrode.

[0048] At least two segment code driver pads 210; the segment code driver pads 210 are connected to the segment code electrodes; the segment code driver pads 210 are located on the input side A1 and / or the output side A2 of the driver chip; or, the segment code driver pads 210 are located on the first side A3 and / or the second side A4 of the driver chip; wherein the first side A3 is opposite to the second side A4, the input side A1 is opposite to the output side A2, and the first side A3 is adjacent to the input side A1 and the output side A2.

[0049] The pixel driving circuit can be arranged one-to-one corresponding to the pixel electrode. The plurality of pixel electrodes and the common electrode form a plurality of pixels. The pixel driving circuit can transmit a driving voltage to the pixel electrode, so as to light up the pixel formed by the pixel electrode and the common electrode. The common electrode can be an electronic paper film or a metal electrode, and the embodiment is not limited.

[0050] The source driving pad 320 is connected with the source of the transistor in the pixel driving circuit, for example, the source of the data writing transistor in the pixel driving circuit. The source driving pad 320 can be connected with the source of the transistor in the pixel driving circuit through a data line (source driving trace).

[0051] By arranging the source driving pad 320, when performing dot matrix driving, the data voltage (source driving voltage) can be transmitted to the data line through the source driving pad 320, the signal on the data line is controlled, so that the data line transmits the data voltage to the pixel driving circuit, so that the pixel driving circuit drives the corresponding pixel electrode according to the data voltage, and then drives the corresponding pixel to emit light.

[0052] The gate driving pad 110 can be connected with the gate of the transistor in the pixel driving circuit, for example, connected with the gate of the transistor in the pixel driving circuit through a gate trace, so as to realize the driving and control of the gate trace, thereby controlling the transistor in the pixel driving circuit, realizing the time sequence control of the pixel driving circuit, realizing the time sequence control of the pixel driving circuit, and facilitating the lighting of the pixel row by row. For example, the gate driving pad 110 is connected with the gate of the data writing transistor in the pixel driving circuit, which can control whether the data writing transistor is turned on, so that the data writing transistor can transmit the data voltage (source driving voltage) to the storage capacitor and the driving transistor in the pixel driving circuit when it is turned on.

[0053] The shift register driving pad 120 can be connected with the shift register, for example, connected with the shift register through the shift register wire, so as to control the signal on the shift register wire, and then control the output signal of the shift register, so as to control the transistor in the pixel driving circuit, realize the timing control of the pixel driving circuit, so that the shift register can control the conduction timing of the transistor in the pixel driving circuit, realize the timing control of the pixel driving circuit, and realize the row-by-row lighting of the pixel, so as to realize the dot matrix driving of the driving chip. The pixel driving circuit can include a data writing transistor, a driving transistor and a storage capacitor. The output signal of the gate driving pad 110 or the shift register can control whether the data writing transistor is turned on, so as to control whether the data writing transistor transmits the data voltage to the driving transistor. After transmitting the data voltage to the driving transistor, the driving transistor can drive the corresponding pixel electrode according to the data voltage, and then make the corresponding pixel emit light. The storage capacitor can store the data voltage and maintain the driving of the pixel electrode.

[0054] The segment code driving pad 210 is connected with the segment code electrode, so as to transmit the driving voltage to the corresponding segment code electrode according to the required display picture, so that the pixel point formed by the driving electrode and the common electrode is lit, thereby displaying the required picture, so that the driving chip realizes the segment code driving.

[0055] For example, the pixel electrode and the segment code electrode are located in different display areas, for example, the pixel electrode and the segment code electrode are located in different display positions of the same display screen, or the pixel electrode and the segment code electrode are located in different display screens, and the embodiment is not limited.

[0056] By integrating the source driving pad 320, the gate driving unit 100 (the gate driving pad 110 or the shift register driving pad 120) and the segment code driving pad 210 in the same driving chip, the driving chip is connected with the pixel driving circuit, or connected with the pixel driving circuit through the shift register, and the pixel driving circuit is connected with the pixel electrode, so that the driving chip is connected with the pixel electrode. In this way, the same driving chip can be connected with the pixel electrode and the segment code electrode, so as to facilitate the connection with different types of electrodes (pixel electrode and segment code electrode), and then facilitate the realization of segment code driving and dot matrix driving by using one driving chip. Therefore, it is not necessary to set two driving chips in the display device to realize the connection with different types of electrodes, which reduces the corresponding boost circuit, communication circuit and voltage stabilizing circuit of the driving chip, simplifies the circuit structure of the display device formed by the driving chip, and reduces the cost.

[0057] The driving chip includes an input side A1, an output side A2, a first side A3 and a second side A4. The input side A1 can be connected with a flexible printed circuit (FPC) to be connected with an external circuit, so as to realize power supply, voltage stabilization, testing, data communication and driving control of the driving chip by the external circuit. The output side A2 can be connected with a pixel driving circuit to provide a gate driving voltage and a data voltage for the pixel driving circuit, or can be connected with a shift register to provide a required voltage and a clock signal for the shift register. The segment code driving pads 210 can be all arranged on the input side A1, or all arranged on the output side A2, or part of the segment code driving pads 210 are arranged on the input side A1 and the other part of the segment code driving pads 210 are arranged on the output side A2, which is not limited in the embodiment.

[0058] The segment code driving pads 210 are all arranged on the output side A2 in FIG. 1, but are not limited thereto.

[0059] The technical scheme of the embodiment integrates the source driving pads, the gate driving unit (the gate driving pad or the shift register driving pad) and the segment code driving pads in the same driving chip, so that the same driving chip can be connected with the pixel electrode and the segment code electrode, the connection with different types of electrodes (the pixel electrode and the segment code electrode) is facilitated, and then the segment code driving and the dot matrix driving are facilitated by using one driving chip. Therefore, two driving chips do not need to be arranged in the display device, the corresponding boost circuit, communication circuit and voltage stabilization circuit of the driving chip are reduced, the circuit structure is simplified, and the cost is reduced.

[0060] On the basis of the above technical scheme, optionally, in an embodiment, the segment code driving pads 210 are arranged on the input side A1 and / or the output side A2 of the driving chip and arranged along the first direction X. The first direction X is a direction in which the first side A3 points to the second side A4.

[0061] For example, as shown in FIG. 1, the segment code driving pads 210 are arranged on the output side A2 of the driving chip and arranged along the first direction X, so that the segment code driving pads 210 are connected with the segment code electrode through a wire to transmit a driving voltage to the segment code electrode.

[0062] For example, FIG. 2 is a structural schematic diagram of another driving chip according to an embodiment of the present application. As shown in FIG. 2, the segment code driving pads 210 are arranged on the input side Al of the driving chip and along the first direction X, so that the gate driving pads 110 or the shift register driving pads 120 are arranged on the output side A2, and other pads are arranged on the output side A2, such as the frame electrode driving pads and the source driving pads. In this way, the gate driving pads 110 are connected to the pixel driving circuit of the display area, the frame electrode driving pads are connected to the frame electrode, and the source driving pads are connected to the data line.

[0063] In another embodiment, the segment code driving pads 210 are arranged on the first side A3 and / or the second side A4 of the driving chip and along the second direction Y, wherein the second direction Y is the direction from the input side Al to the output side A2.

[0064] When the number of the segment code driving pads 210 is small, all the segment code driving pads 210 can be arranged on the first side A3 of the driving chip or the second side A4 of the driving chip.

[0065] When the number of the segment code driving pads 210 is large, or in order to uniformly distribute the pads, a part of the segment code driving pads 210 can be arranged on the first side A3 of the driving chip, and another part of the segment code driving pads 210 can be arranged on the second side A4 of the driving chip.

[0066] In this way, other pads can be arranged on the input side Al and the output side A2, and space is reserved for the arrangement of the other pads. For example, the gate driving pads 110 or the shift register driving pads 120 can be arranged on the output side A2, or the gate driving pads 110 or the shift register driving pads 120 can be arranged on the input side Al, and input pads can be arranged on the input side Al, and the frame electrode driving pads and the source driving pads can be arranged on the output side A2.

[0067] For example, FIG. 3 is a structural schematic diagram of another driving chip according to an embodiment of the present application, and FIG. 4 is a structural schematic diagram of another driving chip according to an embodiment of the present application. As shown in FIG. 3 or FIG. 4, a part of the segment code driving pads 210 are arranged on the first side A3 of the driving chip, and another part of the segment code driving pads 210 are arranged on the second side A4 of the driving chip.

[0068] The difference between FIG. 4 and FIG. 3 is that, in FIG. 3, the gate driving unit 100 (the gate driving pads 110 or the shift register driving pads 120) is arranged on the output side A2, and in FIG. 4, the gate driving unit 100 (the gate driving pads 110 or the shift register driving pads 120) is arranged on the input side Al.

[0069] On the basis of the technical scheme, a part of the number of the gate drive units 100 forms the first pad group 101, and another part of the number of the gate drive units 100 forms the second pad group 102; a part of the number of the segment code drive pads 210 forms the third pad group 201, and another part of the number of the segment code drive pads 220 forms the fourth pad group 202. For example, half of the number of the gate drive units 100 forms the first pad group 101, and the other half of the number of the gate drive units 100 forms the second pad group 102, so that the number of the first pad group 101 and the second pad group 102 is consistent, so that the pad distribution is more uniform, and the wiring design is facilitated. For example, half of the number of the segment code drive pads 210 forms the third pad group 201, and the other half of the number of the segment code drive pads 210 forms the fourth pad group 202, so that the number of the third pad group 201 and the fourth pad group 202 is consistent.

[0070] In an embodiment, as shown in FIG. 1, the gate drive unit 100 is located at the output side A2, the third pad group 201 and the fourth pad group 202 are located between the first pad group 101 and the second pad group 102.

[0071] The gate drive unit 100 and the segment code drive pad 210 can be arranged at the output side A2, the first pad group 101 and the second pad group 102 can be arranged at both sides of the output side A2, for example, the first pad group 101 is located at the edge of the output side A2 close to the first side A3, and the second pad group 102 is located at the edge of the output side A2 close to the second side A4. In this way, the shift register drive pad 120 and the shift register connected to the display device left and right frame can be facilitated. The third pad group 201 and the fourth pad group 202 are located between the first pad group 101 and the second pad group 102, so that the third pad group 201 and the fourth pad group 202 are located in the middle region of the output side A2 or in the middle region, facilitating the connection of the segment code drive pad 210 in the third pad group 201 and the fourth pad group 202 to the segment code electrode of the display area. In this way, the wiring design is facilitated.

[0072] In another embodiment, FIG. 5 is a structural schematic diagram of another driving chip provided by the embodiment of the present application. Optionally, referring to FIG. 5, the gate drive unit 100 is located at the input side A1, the third pad group 201 is located at the output side A2, and at least part of the number of the segment code drive pads 210 in the third pad group 201 is located at a first corner region B1 formed by the output side A2 and the first side A3, the fourth pad group 202 is located at the output side A2, and at least part of the number of the segment code drive pads 210 in the fourth pad group 202 is located at a second corner region B2 formed by the output side A2 and the second side A4.

[0073] The segment code driving pads 210 can be arranged at the output side A2, and the gate driving unit 100 can be located at the input side A1, and the third pad group 201 and the fourth pad group 202 can be arranged at two sides of the output side A2. For example, the third pad group 201 is located at the edge of the output side A2 close to the first side A3, that is, at least part of the segment code driving pads 210 in the third pad group 201 are located at the first corner area B1 formed by the output side A2 and the first side A3. When the number of segment code driving pads 210 in the third pad group 201 is small, the segment code driving pads 210 in the third pad group 201 can be located at the first corner area B1.

[0074] The fourth pad group 202 is located at the edge of the output side A2 close to the second side A4, that is, at least part of the segment code driving pads 210 in the fourth pad group 202 are located at the second corner area B2 formed by the output side A2 and the second side A4. When the number of segment code driving pads 210 in the fourth pad group 202 is small, the segment code driving pads 210 in the fourth pad group 202 can be located at the second corner area B2.

[0075] On the basis of the above technical solutions, FIG. 6 is a structural schematic diagram of another driving chip provided by the embodiment of the present application. Optionally, referring to FIG. 5 or FIG. 6, the driving chip further includes a frame electrode driving pad 310; the frame electrode driving pad 310 is connected with a frame electrode, and the source driving pad 320 is connected with a data line, and the data line is connected with a pixel driving circuit.

[0076] The frame electrode driving pad 310 and the source driving pad 320 are located between the third pad group 201 and the fourth pad group 202.

[0077] The display device in which the driving chip is located can include a frame electrode, which is arranged around a display area of the display device and can form a surrounding or half-surrounding structure in a whole frame electrode or at least two frame electrodes.

[0078] The border electrode driving pads 310 and the source electrode driving pads 320 are located between the third pad group 201 and the fourth pad group 202. For example, the border electrode driving pads 310 are located between the source electrode driving pads 320 and the segment code driving pads 210. In this case, the source electrode driving pads 320 are arranged at the middle position of the output side A2, which facilitates the connection between the source electrode driving pads 320 and the data lines of the display area of the display device, and facilitates the wiring design.

[0079] In an embodiment, as shown in FIG. 2, the gate driving unit 100 is located at the output side A2, the third pad group 201 is located at the input side A1, and at least part of the segment code driving pads 210 in the third pad group 201 are located at a third corner area B3 formed by the input side A1 and the first side A3. The fourth pad group 202 is located at the input side A1, and at least part of the segment code driving pads 210 in the fourth pad group 202 are located at a fourth corner area B4 formed by the input side A1 and the second side A4.

[0080] The gate driving unit 100 is located at the output side A2, and the segment code driving pads 210 can be located at the input side A1. The third pad group 201 and the fourth pad group 202 can be arranged at both sides of the input side A1. For example, the third pad group 201 is located at the edge of the input side A1 close to the first side A3, that is, at least part of the segment code driving pads 210 in the third pad group 201 are located at the third corner area B3 formed by the input side A1 and the first side A3. When the number of the segment code driving pads 210 in the third pad group 201 is small, all the segment code driving pads 210 in the third pad group 201 can be located at the third corner area B3. For example, the fourth pad group 202 is located at the edge of the input side A1 close to the second side A4, that is, at least part of the segment code driving pads 210 in the fourth pad group 202 are located at the fourth corner area B4 formed by the input side A1 and the second side A4. When the number of the segment code driving pads 210 in the fourth pad group 202 is small, all the segment code driving pads 210 in the fourth pad group 202 can be located at the fourth corner area B4.

[0081] In this way, space is reserved for the input pads, so that the input pads can be arranged at the middle position of the input side A1, which facilitates the connection between the input pads and the flexible circuit board.

[0082] In another embodiment, FIG. 7 is a structural schematic diagram of another driving chip provided by the embodiments of the present application. Optionally, as shown in FIG. 7, the gate driving unit 100 is located at the input side A1, and the segment code driving pads 210 are located between the first pad group 101 and the second pad group 102.

[0083] The gate driving unit 100 (the gate driving pad 110 or the shift register driving pad 120) and the segment code driving pad 210 can be arranged at the input side A1, the first pad group 101 and the second pad group 102 can be arranged at two sides of the input side A1, for example, the first pad group 101 is arranged at the edge of the input side A1 close to the first side A3, and the second pad group 102 is arranged at the edge of the input side A1 close to the second side A4. The segment code driving pad 210 is arranged between the first pad group 101 and the second pad group 102. In this way, the input pad can be arranged at the middle position of the input side A1, and the input pad is convenient to connect with the flexible circuit board.

[0084] The input pad can be arranged between the third pad group 201 and the fourth pad group 202, or the input pad is arranged crossing the segment code driving pad 210, which is not limited herein.

[0085] On the basis of the above technical scheme, optionally, referring to FIG. 2 or FIG. 7, the driving chip further comprises an input pad 330, the input pad 330 is connected with the flexible circuit board;

[0086] The input pad 330 is arranged between the third pad group 201 and the fourth pad group 202.

[0087] By arranging the input pad 330, the input pad 330 is connected with the flexible circuit board (Flexible Printed Circuit, FPC), so as to be connected with the external circuit, thereby realizing the power supply, voltage stabilization, test, data communication and driving control of the external circuit to the driving chip. The input pad 330 is arranged between the third pad group 201 and the fourth pad group 202, that is, the input pad 330 is arranged at the middle position of the input side A1, so as to facilitate the connection between the input pad and the flexible circuit board.

[0088] On the basis of the above technical scheme, optionally, the driving chip further comprises:

[0089] The gate driving circuit 410 or the shift register driving circuit 420; the gate driving circuit 410 is connected with the gate driving pad 110, and the shift register driving circuit 420 is connected with the shift register driving pad 120;

[0090] The segment code driving circuit 430, the segment code driving circuit 430 is connected with the segment code driving pad 210.

[0091] For example, FIG. 8 is a schematic diagram of a circuit structure of a driving chip according to an embodiment of the present application. As shown in FIG. 8, the driving chip 51 includes a gate driving circuit 410 and a segment driving circuit 430. The gate driving circuit 410 can transmit a gate driving voltage to the gate driving pad 110, so that the gate driving voltage is transmitted to the gate of a transistor in the pixel driving circuit, the on-off timing of the transistor in the pixel driving circuit is controlled, and then whether the corresponding pixel electrode obtains the driving voltage is controlled, so that whether the corresponding pixel emits light is controlled. For example, the data writing transistor in the pixel driving circuit can be controlled to be turned on row by row, so that the data voltage is written row by row, the pixel driving circuit lights the pixels row by row, and dot matrix driving is realized.

[0092] The segment driving circuit 430 can transmit a segment driving voltage to the segment driving pad 210, so that the segment driving pad 210 can transmit the segment driving voltage to the segment electrode, the corresponding pixel of the segment electrode emits light, and segment driving is realized. For example, the segment driving circuit 430 outputs the same number of signals as the number of segment driving pads 210, so as to provide driving voltage for each segment driving pad 210.

[0093] For example, FIG. 9 is a schematic diagram of another circuit structure of a driving chip according to an embodiment of the present application. As shown in FIG. 9, the driving chip 51 includes a shift register driving circuit 420 and a segment driving circuit 430. The shift register driving circuit 420 can transmit a shift register control signal, for example, including an input voltage and a clock signal of the shift register, to the shift register driving pad 120, so as to realize timing control of the pixel driving circuit, so that the shift register can control the on-off timing of the transistor in the pixel driving circuit, and then control whether the corresponding pixel electrode obtains the driving voltage, so as to control whether the corresponding pixel emits light. For example, the data writing transistor in the pixel driving circuit can be controlled to be turned on row by row, so that the data voltage is written row by row, the pixel driving circuit lights the pixels row by row, and dot matrix driving is realized.

[0094] In this way, by integrating the gate driving circuit 410 or the shift register driving circuit 420 and the segment driving circuit 430 in the same driving chip, and integrating the gate driving unit 100 (the gate driving pad 110 or the shift register driving pad 120) and the segment driving pad 210 in the same driving chip, the driving chip can realize dot matrix driving and segment driving, and the functions of dot matrix display and segment display are integrated. Therefore, two driving chips do not need to be arranged in the display device, the corresponding boost circuit, communication circuit and voltage stabilizing circuit of the driving chip are reduced, the number of devices is reduced, the circuit structure is simplified, and the cost is reduced. Moreover, the power consumption of the display device where the driving chip is located can be reduced.

[0095] On the basis of the above technical solutions, the driving chip further comprises, as shown in FIG. 8 or FIG. 9:

[0096] The segment code driving data storage unit 440 is connected with the segment code driving circuit 430, and is configured to store segment code driving data.

[0097] The segment code driving data storage unit 440 can include a memory, and can store segment code driving data, for example, color coding data. Then, the segment code driving circuit 430 can obtain the color to be refreshed in the display area where the segment code electrode is located from the segment code driving data storage unit 440, and generate a corresponding driving voltage to the segment code driving pad 210, so as to drive the segment code electrode. For example, the segment code driving circuit 430 can generate a driving voltage according to the color coding data and the driving waveform corresponding to the color, so as to drive the segment code electrode.

[0098] The color coding data stored in the segment code driving data storage unit 440 can be 2 bits, 3 bits, 4 bits, or other data bits. The number of bits of the color coding data can be determined according to the number of stored colors. For example, when the number of colors is large, the number of bits of the color coding data is large; and when the number of colors is small, the number of bits of the color coding data is small.

[0099] For example, Table 1 is a color coding data table. As shown in Table 1, four colors can be coded. Taking colors A, B, C, and D as examples, the corresponding color coding is 00, 01, 10, and 11, respectively. Table 2 is another color coding data table. As shown in Table 2, taking colors A, B, C, D, E, F, G, and H as examples, the corresponding color coding is 000, 001, 010, 011, 100, 101, 110, and 111, respectively. The colors corresponding to colors A, B, C, D, E, F, G, and H can be determined according to actual application, and the present embodiment is not limited in this regard.

[0100] Table 1 is a color coding data table.

[0101] Table 2 is another color coding data table.

[0102] Optionally, as shown in FIG. 8 or FIG. 9, the driving chip further comprises an oscillator 451. The oscillator 451 can be an RC oscillator, and the oscillator 451 can provide a clock signal as a clock source.

[0103] Optionally, referring to FIG. 8 or FIG. 9, the driving chip further comprises a temperature detector 452 and an analog-to-digital converter 453; the temperature detector 452 is configured to detect the temperature of the driving chip, and convert the detected analog signal into a digital signal through the analog-to-digital converter 453, and then transmit the temperature data to the corresponding register unit. The temperature detector 452 can comprise a temperature sensor or the like, and the embodiments are not limited thereto.

[0104] Optionally, referring to FIG. 8 or FIG. 9, the driving chip further comprises a voltage detection circuit 454, which is configured to detect whether the power voltage of the driving chip is lower than the voltage specification value. The voltage detection circuit 454 can comprise a voltage sensor or the like, and the embodiments are not limited thereto.

[0105] Optionally, referring to FIG. 8 or FIG. 9, the driving chip further comprises a communication unit 455. The communication unit 455 can comprise an Inter-Integrated Circuit (IIC) communication circuit, and the communication unit 455 can realize internal communication of the driving chip, and can also realize communication between different driving chips. The communication unit 455 can also be connected with an external temperature detection chip to receive temperature data collected by the external temperature detection chip.

[0106] Optionally, referring to FIG. 8 or FIG. 9, the driving chip further comprises a frame electrode driving circuit 456 and a source electrode driving circuit 457, the frame electrode driving circuit 456 is connected with the frame electrode driving pad 310, and the source electrode driving circuit 457 is connected with the source electrode driving pad 320. The frame electrode driving circuit 456 can send a driving voltage to the frame electrode through the frame electrode driving pad 310, so that the pixel formed by the frame electrode emits light, thereby forming a boundary around the display area, facilitating packaging of the display device. The source electrode driving circuit 457 sends a data voltage (source electrode driving voltage) to the data line (source electrode driving wire) through the source electrode driving pad 320, so as to transmit the data voltage to the corresponding pixel driving circuit, facilitating the pixel driving circuit to transmit the driving voltage to the pixel electrode.

[0107] The embodiments of the present application also provide a display device, and FIG. 10 is a structural schematic diagram of a display device provided by the embodiments of the present application. Referring to FIG. 10, the display device comprises the driving chip 51, the pixel driving circuit 52, the pixel electrode 53 and at least one segment electrode 54 provided by any of the embodiments of the present application; the pixel driving circuit 52 is connected with the pixel electrode 53;

[0108] The driving chip 51 comprises the gate driving unit 100, and the gate driving unit 100 comprises the gate driving pad 110 connected with the gate of the transistor in the pixel driving circuit 52;

[0109] Alternatively, FIG. 11 is a structural schematic diagram of another display device provided in the embodiment of the present application. Referring to FIG. 11, the gate driving unit 100 includes a shift register driving pad 120, and the display device further includes a shift register 55, the shift register driving pad 120 is connected with the shift register 55, and the shift register 55 is connected with the gate of the transistor in the pixel driving circuit 52.

[0110] The display device can be an electronic paper display device, or a display device of a mobile phone or a watch, which is not limited in the embodiment.

[0111] In the technical solution of the embodiment, the source driving pad 320, the gate driving unit (the gate driving pad 110 or the shift register driving pad 120) and the segment code driving pad 210 are integrated in the same driving chip 51, the source driving pad 320 is connected with the source of the transistor in the pixel driving circuit, and the source driving pad 320 provides a data voltage (a source driving voltage) for the pixel driving circuit. The gate driving pad 110 can control the transistor in the pixel driving circuit 52, and the shift register driving pad 120 can drive the shift register 55, so that the shift register 55 controls the transistor in the pixel driving circuit 52, controls the working time sequence of the pixel driving circuit 52, and drives the pixel electrode 53. The segment code driving pad 210 can provide a driving voltage for the segment code electrode 54. Therefore, the driving chip 51 can realize both dot matrix driving and segment code driving. Thus, two driving chips 51 do not need to be arranged in the display device, the corresponding boost circuit, communication circuit and voltage stabilizing circuit of the driving chip 51 are reduced, the circuit structure is simplified, and the cost is reduced.

[0112] Based on the above technical solution, optionally, referring to FIG. 10 or FIG. 11, the display device is divided into a display area AA and a non-display area NAA; the driving chip 51 and the shift register 55 are located in the non-display area NAA.

[0113] The display area AA is divided into a first sub-area AA1 and a second sub-area AA2; the pixel driving circuit 52 and the pixel electrode 53 are located in the first sub-area AA1, and the segment code electrode 54 is located in the second sub-area AA2.

[0114] The first sub-area AA1 and the second sub-area AA2 can be different display areas on the same display screen, or can be located in different display screens, which is not limited in the embodiment.

[0115] The pixel driving circuit 52 and the pixel electrode 53 are arranged in the first sub-area AA1, and the segment code electrode 54 is arranged in the second sub-area AA2, so that the driving chip 51 can realize both dot matrix driving and segment code driving.

Claims

1. A driving chip, comprising: a source driving pad connected to a source electrode of a transistor in a pixel driving circuit; a gate driving unit comprising a gate driving pad or a shift register driving pad; the gate driving pad is connected to a gate electrode of a transistor in the pixel driving circuit, and the shift register driving pad is connected to a shift register which is connected to a gate electrode of a transistor in the pixel driving circuit; the pixel driving circuit is connected to a pixel electrode; at least two segment code driving pads; the segment code driving pads are connected to segment code electrodes; the segment code driving pads are located at an input side and / or an output side of the driving chip; or, the segment code driving pads are located at a first side and / or a second side of the driving chip; wherein the first side is opposite to the second side, the input side is opposite to the output side, and the first side is adjacent to the input side and the output side.

2. The drive chip of claim 1, wherein, The segment code driving pads are located at the input side and / or the output side of the driving chip and are arranged in a first direction. Or, the segment code driving pads are located at the first side and / or the second side of the driving chip and are arranged in a second direction; wherein the first direction is a direction in which the first side points to the second side, and the second direction is a direction in which the input side points to the output side.

3. The driving chip according to claim 1, wherein, A part of the gate driving units form a first pad group, and another part of the gate driving units form a second pad group; a part of the segment code driving pads form a third pad group, and another part of the segment code driving pads form a fourth pad group; The gate driving units are located at the output side, and the third pad group and the fourth pad group are located between the first pad group and the second pad group. Or, the gate driving units are located at the input side, the third pad group is located at the output side, and at least part of the segment code driving pads in the third pad group are located in a first corner area formed by the output side and the first side; the fourth pad group is located at the output side, and at least part of the segment code driving pads in the fourth pad group are located in a second corner area formed by the output side and the second side. 4.The driving chip of claim 3, further comprising a bezel electrode driving pad; the bezel electrode driving pad is connected to a bezel electrode, the source driving pad is connected to a data line, and the data line is connected to the pixel driving circuit; The bezel electrode driving pad and the source driving pad are located between the third pad group and the fourth pad group.

5. The driving chip according to claim 1, wherein, A part of the gate driving units form a first pad group, and another part of the gate driving units form a second pad group; a part of the segment code driving pads form a third pad group, and another part of the segment code driving pads form a fourth pad group; The gate driving unit is located at the output side, the third pad group is located at the input side, and at least part of the segment code driving pads in the third pad group are located at a third corner region formed by the input side and the first side, the fourth pad group is located at the input side, and at least part of the segment code driving pads in the fourth pad group are located at a fourth corner region formed by the input side and the second side. Alternatively, the gate driving unit is located at the input side, and the segment code driving pad is located between the first pad group and the second pad group.

6. The driving chip according to claim 5, further comprising an input pad, the input pad being connected with a flexible circuit board. The input pad is located between the third pad group and the fourth pad group.

7. The driving chip according to claim 1, further comprising: a gate driving circuit or a shift register driving circuit; the gate driving circuit is connected with the gate driving pad, and the shift register driving circuit is connected with the shift register driving pad; a segment code driving circuit, the segment code driving circuit being connected with the segment code driving pad.

8. The driving chip according to claim 7, further comprising: a segment code driving data storage unit, the segment code driving data storage unit being connected with the segment code driving circuit, and the segment code driving data storage unit being configured to store segment code driving data.

9. A display device comprising: The driving chip, the pixel driving circuit, the pixel electrode and the at least one segment code electrode according to any one of claims 1-8; the pixel driving circuit is connected with the pixel electrode; the driving chip comprises a gate driving unit, the gate driving unit comprises a gate driving pad, the gate driving pad being connected with a gate of a transistor in the pixel driving circuit; or the gate driving unit comprises a shift register driving pad, the display device further comprises a shift register, the shift register driving pad being connected with the shift register, and the shift register being connected with a gate of a transistor in the pixel driving circuit.

10. The display device according to claim 9, wherein the display device is divided into a display region and a non-display region; the driving chip and the shift register are located at the non-display region; the display region is divided into a first sub-region and a second sub-region; the pixel driving circuit and the pixel electrode are located at the first sub-region, and the segment code electrode is located at the second sub-region.

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