WO2024020855A1 - 印刷电路板、包括该印刷电路板的显示设备和图像显示系统 - Google Patents

印刷电路板、包括该印刷电路板的显示设备和图像显示系统 Download PDF

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Publication number
WO2024020855A1
WO2024020855A1 PCT/CN2022/108242 CN2022108242W WO2024020855A1 WO 2024020855 A1 WO2024020855 A1 WO 2024020855A1 CN 2022108242 W CN2022108242 W CN 2022108242W WO 2024020855 A1 WO2024020855 A1 WO 2024020855A1
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WO
WIPO (PCT)
Prior art keywords
interface
circuit board
printed circuit
extension direction
display panel
Prior art date
Application number
PCT/CN2022/108242
Other languages
English (en)
French (fr)
Inventor
王春华
韩锐
翟跃
于洁
董小乔
王晓霞
李鹏涛
刘田甜
潘倩男
李必奇
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202280002375.4A priority Critical patent/CN117796158A/zh
Priority to PCT/CN2022/108242 priority patent/WO2024020855A1/zh
Publication of WO2024020855A1 publication Critical patent/WO2024020855A1/zh

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/11Printed elements for providing electric connections to or between printed circuits

Definitions

  • the present disclosure relates to the field of electronic technology, and in particular, to a printed circuit board (PCB), a display device including the printed circuit board, and an image display system.
  • PCB printed circuit board
  • display device including the printed circuit board
  • image display system an image display system
  • the display panel is usually designed in a rectangular shape.
  • the application scenarios of display panels gradually become richer, people have also begun to pursue personalized designs of display panels, designing the outline of the display panel into irregular shapes, for example, display panels used in display instruments in the interior spaces of vehicles or other means of transportation. It is often desired to be designed with irregular shapes to enhance the decorative effect of the interior space.
  • the printed circuit board used to drive the display panel is still designed in a rectangular shape. In practice, the printed circuit board is usually arranged below the display panel and acts to some extent as an intermediate component.
  • the printed circuit board often needs to receive relevant control signals and power signals from an external controller (for example, a vehicle control system); on the other hand, there is signal interaction between the printed circuit board and the display panel, and the printed circuit board will come from The relevant signals of the external controller are transmitted to the display panel.
  • the printed circuit board can also transmit the feedback signal of the display panel or the input signal received by the display panel to the external controller.
  • the display panel is controlled by the external controller. The desired image display or interaction between the user and the device to which the display panel is applied.
  • An embodiment of the present disclosure provides a printed circuit board for driving a display panel and including a polygonal outline including a first side and a second side, an extension direction of the first side and the The extending directions of the second sides are intersecting and not perpendicular, and the printed circuit board includes: a first interface configured to be electrically connected to the controller to implement first signal interaction between the printed circuit board and the controller; and a second interface configured to be electrically connected to the display panel to implement a second signal interaction between the printed circuit board and the display panel, thereby enabling the display panel to communicate between the controller and the display panel.
  • Image display is performed under the control of a printed circuit board.
  • the length extension direction of the first interface forms a first included angle with the extension direction of the first side.
  • the length extension direction of the second interface forms a second included angle with the extension direction of the second side.
  • the first included angle Each of the included angles with the second angle is no greater than 20 degrees.
  • the printed circuit board further includes: a third interface configured to be electrically connected to the controller to implement third signal interaction between the printed circuit board and the controller; and a fourth interface, It is configured to be electrically connected to the display panel to achieve a fourth signal interaction between the printed circuit board and the display panel, so that the display panel is controlled by the controller and the printed circuit board. image display below.
  • the length extension direction of the third interface is consistent with the length extension direction of the first interface
  • the length extension direction of the fourth interface is consistent with the length extension direction of the second interface.
  • the first side of the polygonal outline is adjacent to the second side of the polygonal outline.
  • the extending direction of the first side and the extending direction of the second side intersect to form a third included angle, and the third included angle is between 70-80 degrees.
  • the first interface and the second interface are electrically connected to each other, the third interface and the fourth interface are electrically connected to each other, and the polygonal outline includes a side opposite to the first side.
  • a third side wherein the first interface and the second interface are closer to the first side than the third interface and the fourth interface, and the third interface and the fourth interface The interface is closer to the third side than the first interface and the second interface.
  • the extending direction of the third side intersects the extending direction of the second side to form a fifth included angle, and the fifth included angle is smaller than the third included angle.
  • the first side of the polygonal outline and the second side of the polygonal outline are opposite each other.
  • the extending direction of the first side and the extending direction of the second side intersect to form a fourth included angle, and the fourth included angle is between 20 and 30 degrees.
  • each of the length extension direction of the first interface, the length extension direction of the second interface, the length extension direction of the third interface, and the length extension direction of the fourth interface is parallel to the second side. extension direction.
  • the first interface and the second interface are electrically connected to each other, and the third interface and the fourth interface are electrically connected to each other, wherein the polygonal outline of the printed circuit board further includes: a third side, each of the extending direction of the first side and the extending direction of the second side intersects the extending direction of the third side, a fourth side opposite to the third side, the second side Each of the extending directions of the side and the extending direction of the first side intersects the extending direction of the fourth side, and the first interface and the second interface are compared with the third interface and the The fourth interface is closer to the third side, and the third interface and the fourth interface are closer to the fourth side than the first interface and the second interface.
  • the printed circuit board further includes: a fifth interface configured to be electrically connected to the controller to implement fifth signal interaction between the printed circuit board and the controller; a sixth interface , which is configured to be electrically connected to the backlight module to achieve the sixth signal interaction between the printed circuit board and the backlight module, so that the display panel is connected between the controller, the printed circuit board and the backlight module. Images are displayed under the control of the backlight module, the fifth interface is closer to the first side than the sixth interface, and the sixth interface is closer to the second side than the fifth interface. side.
  • the length extension direction of the fifth interface is consistent with the length extension direction of the first interface, and the length extension direction of the fifth interface and the extension direction of the second side form an angle of 70-80
  • the included angle is 60-70 degrees
  • the length extension direction of the sixth interface and the extension direction of the second side form an included angle of 60-70 degrees.
  • the length extension direction of the fifth interface and the extension direction of the second side form an included angle of 10-20 degrees
  • the length extension direction of the sixth interface and the extension direction of the second side The direction forms an included angle of 60-70 degrees.
  • each of the first included angle and the second included angle is 0 degrees, such that the length extension direction of the first interface is parallel to the first side of the polygonal outline. In the extension direction, the length extension direction of the second interface is parallel to the extension direction of the second side of the polygonal outline.
  • the polygonal outline includes a hexagon, and the first side and the second side are two adjacent sides or two opposite sides of the hexagon.
  • the first interface, the second interface, the third interface and the fourth interface are located on a first side of the printed circuit board body of the printed circuit board, and the printed circuit board further includes a printed circuit board located on the printed circuit board.
  • Electrical components on the first side of the circuit board body, the electrical components include at least one of an integrated circuit chip, a resistor and a capacitor, among the first interface, the second interface, the third interface and the fourth interface
  • the height of each on the first side is 2 to 15 times the height of the electrical component on the first side.
  • the first side of the printed circuit board body includes any one of the first interface, the second interface, the third interface and the fourth interface and the A component-free area between electrical components, wherein the diameter of the component-free area is greater than or equal to 1.5 mm.
  • a display device including: a printed circuit board as described in any of the preceding embodiments; a first flexible electrical connector; and a display panel, the first flexible electrical connection The first end of the first flexible electrical connector is connected to the second interface of the printed circuit board, and the second end of the first flexible electrical connector is connected to the display panel.
  • a display device includes: a printed circuit board as described in any one of the preceding embodiments; a first flexible electrical connector; a second flexible electrical connector, and a display panel, where
  • the display panel includes a first liquid crystal display panel and a second liquid crystal display panel sequentially arranged along the light emitting direction of the display device, and the first end of the first flexible electrical connector is connected to the first end of the printed circuit board.
  • Two interfaces are connected, the second end of the first flexible electrical connector is connected to the first liquid crystal display panel; the first end of the second flexible electrical connector is connected to the fourth interface of the printed circuit board, The second end of the second flexible electrical connector is connected to the second liquid crystal display panel.
  • the first liquid crystal display panel includes a first source driver and the second liquid crystal display panel includes a second source driver, wherein a second end of the first flexible electrical connector is connected to the first source driver.
  • a source driver the second end of the second flexible electrical connector is connected to the second source driver
  • the length extension direction of the second interface is parallel to the length extension direction of the first source driver
  • the third The length extension direction of the four interfaces is parallel to the length extension direction of the second source driver.
  • the display device includes a backlight module that provides backlight for the display panel, and the printed circuit board is located on a side of the backlight module away from the display panel.
  • the printed circuit board further includes: a fifth interface configured to be electrically connected to the controller to implement fifth signal interaction between the printed circuit board and the controller; a sixth interface , which is configured to be electrically connected to the backlight module to achieve the sixth signal interaction between the printed circuit board and the backlight module, so that the display panel is connected between the controller, the printed circuit board and the backlight module. The image is displayed under the control of the backlight module.
  • Yet another embodiment of the present disclosure provides an image display system, including: a controller; and the display device as described in any one of the foregoing embodiments, the controller is at least connected to the printed circuit board.
  • the first interface is electrically connected, so that the display panel displays images under the control of the controller and the printed circuit board.
  • FIG. 1 schematically illustrates an outline of a printed circuit board and an outline of a display panel electrically connected to the printed circuit board according to one embodiment of the present disclosure
  • FIG. 2 schematically illustrates the connection relationship between a printed circuit board and a display panel, and between a printed circuit board and a controller according to one embodiment of the present disclosure
  • FIG. 3 schematically illustrates a physical picture of a printed circuit board according to another embodiment of the present disclosure
  • Figure 4a schematically illustrates an outline of a printed circuit board and a partial interface of the printed circuit board according to another embodiment of the present disclosure
  • Figure 4b schematically illustrates an outline of a printed circuit board and a partial interface of the printed circuit board according to another embodiment of the present disclosure
  • FIG. 5 schematically illustrates an example of an application scenario of a printed circuit board to which embodiments of the present disclosure can be applied;
  • Figure 6 schematically illustrates an example in which the printed circuit board shown in Figure 1 or Figure 3 is applied to an auxiliary screen in a car cab;
  • FIG. 9 schematically illustrates a partial cross-sectional structural view of an image display system provided according to an embodiment of the present disclosure.
  • the "display device” mentioned in this article refers to an electronic device with image function.
  • Examples of display devices include but are not limited to liquid crystal displays, organic light-emitting diode displays, etc.
  • all components in the display device except auxiliary components (such as outer frames, backlight modules, etc.) that are not directly related to the image display function of the display device are called a display panel.
  • a display panel It has basic image display function and is the core component of the display device to realize the image display function.
  • a liquid crystal display panel at least includes an array substrate, a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate.
  • the organic light-emitting diode display panel at least includes an array substrate and organic light-emitting diode elements produced or installed on the array substrate.
  • Each "included angle” mentioned in this article such as “first included angle”, “second included angle”, etc., refers to the non-obtuse angle formed by the intersection of two straight lines.
  • the printed circuit board used to drive the display panel still maintains a rectangular shape.
  • the various components on the printed circuit board body are also arranged in a regular manner, that is, arranged on the printed circuit board body in a "horizontal and vertical" manner. s surface.
  • the inventor of this patent application realized that in application scenarios involving irregularly shaped display panels, using a conventional rectangular shaped printed circuit board, the signals between the printed circuit board and the display panel, and the printed circuit board and the external controller The stability or reliability of the connection is greatly challenged.
  • An embodiment of the present disclosure provides a printed circuit board for driving a display panel.
  • the printed circuit board includes a polygonal outline, the polygonal outline includes a first side and a second side, an extension direction of the first side and the The extension directions of the second sides intersect and are not perpendicular.
  • the printed circuit board includes: a first interface configured to be electrically connected to the controller to implement a first signal interaction between the printed circuit board and the controller; and a second interface configured to be electrically connected to the display panel to implement The second signal interaction between the printed circuit board and the display panel is realized, so that the display panel displays images under the control of the controller and the printed circuit board.
  • the length extension direction of the first interface forms a first included angle with the extension direction of the first side of the polygonal outline.
  • the length extension direction of the second interface forms a second included angle with the extension direction of the second side of the polygonal outline.
  • the first included angle Each of the included angles with the second angle is no greater than 20 degrees.
  • first interface and second interface refer to the printed circuit board implementing the interface between it and external components (for example, an electrical connector connected to a display panel or a controller) A connection port for an electrical connection.
  • Examples of an interface include, but are not limited to, a printed circuit board terminal block or a printed circuit board connector.
  • the "length extension direction” mentioned in this article related to each interface refers to the extension direction of the longest side in the outline of the orthographic projection of the interface on the printed circuit board body. For example, when the outline of the orthographic projection of the first interface on the printed circuit board body is a rectangle, the length extension direction of the first interface refers to the extension direction of the long side of the rectangular outline of the first interface.
  • the "controller” mentioned in this article refers to the device or system that provides the required signals for the display panel to display images.
  • the specific form of the "controller” may change according to the application scenario of the display panel.
  • the controller can be a single integrated
  • the circuit chip may also be a system including a plurality of integrated circuit chips and peripheral circuits between the plurality of integrated circuit chips.
  • the display panel receives the signals needed to display images from the controller while running, so the controller above can become the "host".
  • the controller may be the car's electronic controller (ECU).
  • the printed circuit board includes a polygonal outline, and the extending direction of the first side and the extending direction of the second side of the polygonal outline intersect and are not perpendicular, which means that the outline of the printed circuit board has a non-rectangular shape.
  • the outline of the printed circuit board may be the same or substantially consistent with the outline of the display panel. That is, the outline of the printed circuit board may be determined based on the outline of the display panel.
  • the printed circuit board includes a first interface and a second interface, so that the printed circuit board can be electrically connected to the controller and the display panel respectively, so that the display panel displays images under the control of the controller and the printed circuit board.
  • the length extension direction of the first interface forms a first included angle with the extension direction of the first side of the polygonal outline of the printed circuit board
  • the length extension direction of the second interface forms a third included angle with the extension direction of the second side of the polygonal outline of the printed circuit board.
  • Two included angles, each of the first included angle and the second included angle is not greater than 20 degrees. That is to say, the length extension direction of the first interface is parallel to the extension direction of the first side of the polygonal outline of the printed circuit board or the deviation between the two is not greater than 20 degrees
  • the length extension direction of the second interface is parallel to the extension direction of the first side of the polygonal outline of the printed circuit board.
  • the extension direction of the second side of the polygonal outline is parallel or the deviation between the two sides is not greater than 20 degrees. Since the first interface and the second interface of the printed circuit board provided in this embodiment are not arranged "horizontally and vertically" like the interfaces of the conventional printed circuit board, the length extension direction of the first interface and the second interface is in line with the printed circuit board.
  • the extension direction of the first side or the second side of the polygonal outline of the board remains consistent or has a small deviation, so the spatial positioning of the display panel and controller relative to the printed circuit board can be more flexibly adjusted, and the printed circuit board and the display panel or Spatial layout of the connection device between the controller to avoid or reduce distortion or deformation of the connection device between the display panel and the printed circuit board and between the printed circuit board and the controller, thereby enhancing the connection between the printed circuit board and the display panel or controller
  • the reliability and stability of the electrical connection between them are conducive to improving the image display effect of the display panel.
  • FIG. 1 schematically shows the display panel 100 and the printed circuit board 200 and the connection devices 310 , 320 between the display panel 100 and the printed circuit board 200 .
  • the display panel 100 and the printed circuit board 200 are shown in an unconnected state in FIG. 1 .
  • the printed circuit board 200 includes a polygonal outline including a first side 201 and a second side 202 .
  • the extending direction 201A of the first side 201 and the extending direction 202A of the second side 202 intersect and are not perpendicular.
  • the printed circuit board includes a first interface 210 and a second interface 220.
  • the first interface 210 is electrically connected to the controller (not shown in FIG. 1) to realize first signal interaction between the printed circuit board 200 and the controller.
  • the second interface 210 is electrically connected to the controller (not shown in FIG. 1).
  • the interface 220 is electrically connected to the display panel 100 to realize the second signal interaction between the printed circuit board 200 and the display panel 100 , so that the display panel 100 displays images under the control of the controller and the printed circuit board 200 .
  • the length extension direction 210A of the first interface 210 forms a first included angle with the extension direction 201A of the first side of the polygonal outline
  • the length extension direction 220A of the second interface 220 forms a second included angle with the extension direction 202A of the second side of the polygonal outline.
  • connection device for connecting the controller to the printed circuit board 200 may be connected to the first interface 210 near the first side 201 of the printed circuit board 200, and the connection device between the display panel 100 and the printed circuit board 200 (eg, FIG.
  • the connecting devices 310, 320 shown in can be connected to the second interface 220 near the second side 202 of the printed circuit board 200, due to the deviation between the length extension direction of the first interface 210 and the extension direction of the first side 201 Small, the deviation between the length extension direction of the second interface 220 and the extension direction of the second side 202 is small, so the connection device between the display panel and the printed circuit board and between the printed circuit board and the controller is distorted or The possibility of deformation is reduced, and the stress on the connection between the first interface 210 and the second interface 220 and the corresponding connection device is reduced, thereby enhancing the stability of the connection between the first interface 210 and the second interface and the corresponding connection device. sex.
  • connection device 310 between the display panel 100 and the printed circuit board 200 shown in FIG. 1 may be a flexible connector such as a flexible printed circuit board FPC.
  • the flexible connector 310 When the display panel 100 is connected to the printed circuit through the flexible connector 310
  • the flexible connector 310 When the second interface 220 of the board is connected, the flexible connector 310 will not be twisted or the degree of twisting is low, which is beneficial to achieving a good electrical connection between the printed circuit board 200 and the display panel.
  • the first included angle between the length extension direction of the first interface and the extension direction of the first side of the polygonal outline of the printed circuit board is no more than 10 degrees, and the length extension direction of the second interface is not greater than 10 degrees.
  • the second included angle between the extension directions of the second sides of the polygonal outline is not greater than 10 degrees.
  • the first included angle between the length extension direction of the first interface and the extension direction of the first side of the polygonal outline of the printed circuit board and the angle between the length extension direction of the second interface and the polygonal outline of the printed circuit board is both 0 degrees, that is, the length extension direction of the first interface is parallel to the extension direction of the first side of the polygonal outline of the printed circuit board, and the length extension direction of the second interface The direction of extension of the second side of the polygonal outline parallel to the printed circuit board. This can better ensure the reliability of the connection between the first interface and the second interface of the printed circuit board and the corresponding connection device, and enhance the stability of signal transmission between the printed circuit board, the controller and the display panel.
  • the printed circuit board further includes: a third interface configured to be electrically connected to the controller to implement a third signal interaction between the printed circuit board and the controller; and a third interface.
  • Four interfaces configured to be electrically connected to the display panel to achieve a fourth signal interaction between the printed circuit board and the display panel, thereby enabling the display panel to communicate between the controller and the printed circuit board.
  • the image is displayed under the control of the board, the length extension direction of the third interface is consistent with the length extension direction of the first interface, and the length extension direction of the fourth interface is consistent with the length extension direction of the second interface.
  • This embodiment may be applicable to situations where there are many signal paths between the display panel and the printed circuit board or the display panel includes at least two modules that individually receive signals from the printed circuit board.
  • the display panel can be a BD cell (double stacked screen) display panel, that is, the display panel includes a double-layer LCD panel, one of which is a black and white LCD panel for accurately modulating brightness and darkness, and the other layer is a black and white LCD panel.
  • the LCD panel is a color LCD panel used for image display. Two layers of LCD panels are superimposed to achieve high-contrast image display.
  • the printed circuit board provided in this embodiment can be explained with the help of FIG. 1 as an example.
  • the printed circuit board also includes a third interface 230 and a fourth interface 240.
  • the third interface 230 is configured to be electrically connected to the controller to implement a third signal interaction between the printed circuit board 200 and the controller.
  • the fourth interface 240 is configured to be electrically connected to the display panel 100 to implement a fourth signal interaction between the printed circuit board 200 and the display panel 100 , so that the display panel 100 performs image display under the control of the controller and the printed circuit board 200 .
  • the length extension direction 240A of the third interface 230 is consistent with the length extension direction 210A of the first interface 210
  • the length extension direction 240A of the fourth interface 240 is consistent with the length extension direction 220A of the second interface 220 . That is to say, the third interface 230 is arranged on the printed circuit in a similar manner to the first interface 210 (that is, the deviation between the extension direction of the third interface 230 and the extension direction of the first side 201 is small or they are parallel).
  • the fourth interface 240 is arranged on the printed circuit in a similar manner to the second interface 220 (that is, the deviation between the extension direction of the fourth interface 240 and the extension direction of the second side 2012 is small or they are parallel).
  • the flexible connector 320 On the board 200 body, when the display panel 100 is connected to the fourth interface 220 of the printed circuit board through the flexible connector 320, the flexible connector 320 will not be twisted or the degree of distortion is low, realizing the connection between the printed circuit board 200 and the display panel. good electrical connection between them.
  • Figure 2 schematically shows the connection devices CA1 and CA2 between the BD cell display panel 100 and the printed circuit board 200, and the connection devices CA3 and CA4 between the printed circuit board 200 and the controller CON.
  • the display panel 100, the printed circuit board 200 and the controller CON shown in FIG. 2 are rectangular, but this does not represent their outline shapes. FIG. 2 only represents these components as boxes for simplicity. In particular, the actual outlines of the printed circuit board 200 and the display panel 100 may assume any non-rectangular shape.
  • the first interface and the third interface of the printed circuit board 200 are connected to the connecting devices CA3 and CA4 respectively.
  • the second interface and the fourth interface of the printed circuit board 200 are connected to the connecting devices CA1 and CA2 respectively.
  • the connecting devices CA1 and CA2 respectively correspond to Connection devices 310, 320 in Figure 1.
  • the spatial distortion or deformation of the connecting devices CA1, CA2, CA3 and CA4 can be alleviated or avoided, and the connection points between each interface of the printed circuit board and the corresponding connecting device can be reduced. force, thereby enhancing the stability of the connection between each interface and the corresponding connection device, thereby improving the stability of signal transmission between the printed circuit board 200 and the controller CON and between the printed circuit board 200 and the display panel 100, Improve the working performance and image display effect of the display panel.
  • the controller CON can transmit power signals and image data signals and control signals required for image display by the display panel 100 to the printed circuit board 200 via the connection devices CA3 and CA4.
  • the printed circuit board 200 converts the above power signals , image data signals and control signals are transmitted to the display panel.
  • the display panel 100 may also transmit the feedback signal of the display panel itself and the external input signal received by the display panel to the controller CON via the printed circuit board 200 . Therefore, the first signal interaction, the second signal interaction, the third signal interaction and the fourth signal interaction mentioned above refer to the relationship between the display panel and the printed circuit board, or between the printed circuit board and the control panel during operation.
  • the technical solution of the present disclosure does not involve how the display panel displays images, and the specific details of the first signal interaction, the second signal interaction, the third signal interaction and the fourth signal interaction will not be described in detail here.
  • Figure 3 schematically shows a physical diagram of a printed circuit board provided according to one embodiment of the present disclosure.
  • the printed circuit board includes a polygonal outline.
  • the polygonal outline includes a first side 301 and a second side 302.
  • the extending direction of the first side 301 and the extending direction of the second side 302 intersect but are not perpendicular.
  • the first side 301 and the second side 302 are adjacent to each other.
  • the printed circuit board includes a first interface 310, a second interface 320, a third interface 330 and a fourth interface 340.
  • the first interface 310, the second interface 320, the third interface 330 and the fourth interface 340 may respectively correspond to The first interface 210, the second interface 220, the third interface 230 and the fourth interface 240 are shown in Figure 1 .
  • the extending direction of the first side 301 and the extending direction of the second side 302 intersect to form a third included angle ⁇ , and the third included angle ⁇ is between 70 and 80 degrees. In one example, the third included angle ⁇ is 76 degrees.
  • Figure 4a illustrates an outline of a printed circuit board and some interfaces on the printed circuit board provided in accordance with another embodiment of the present disclosure.
  • the printed circuit board 400 includes a first interface 410, a second interface 420, a third interface 430 and a fourth interface 440.
  • the first interface 410, the second interface 420, the third interface 430 and the fourth interface 440 In terms of functions, they may respectively correspond to the first interface 210, the second interface 220, the third interface 230 and the fourth interface 240 shown in FIG. 1 .
  • the printed circuit board includes a first side 401 and a second side 402. The extending direction of the first side 401 and the extending direction of the second side 402 intersect and are not perpendicular.
  • the first side of the polygonal outline of the printed circuit board 401 and the second side 402 of the polygonal outline are opposite each other.
  • the "relative to each other” mentioned here refers to the positional relationship in which the first side and the second side are non-adjacent.
  • the extension direction 401A of the first side 401 of the polygonal outline of the printed circuit board and the extension direction 402A of the second side 402 intersect to form a fourth included angle ⁇ , the fourth included angle ⁇
  • the angle ⁇ is between 20-30 degrees.
  • the angle between the length extension direction of the first interface 410 and the third interface 430 and the extension direction of the first side 401 of the polygonal outline of the printed circuit board is less than 10 degrees, that is, the first interface 410 and The deviation between the length extension direction of the third interface 430 and the extension direction of the first side 401 of the polygonal outline of the printed circuit board is small or parallel, and the connection device between the printed circuit board and the controller is on the first side 401 is nearby connected to the first interface 410 or the third interface 430, and when the printed circuit board 400 and the controller are connected via the connecting device, the connecting device between the printed circuit board 400 and the controller will not be twisted or twisted to a low degree, The reliability and stability of the connection between the printed circuit board 400 and the controller can be enhanced.
  • the deviation between the length extension direction of the second interface 420 and the fourth interface 440 and the extension direction of the second side 402 of the polygonal outline of the printed circuit board is small or parallel, which helps to strengthen the printed circuit board.
  • 400 is connected to the display panel through the second interface 420 and the fourth interface 440 and the corresponding connection devices to ensure connection stability and reliability.
  • the first included angle between the length extension direction of the first interface and the extension direction of the first side of the polygonal outline of the printed circuit board and the length extension direction of the second interface and the printed circuit board is all 0 degrees, so that the length extension direction of the first interface is parallel to the extension direction of the first side of the polygonal outline, and the third The length extension direction of the two interfaces is parallel to the extension direction of the second side of the polygonal outline, such that.
  • the length extension direction of the third interface can be consistent with the length extension direction of the first interface
  • the length extension direction of the fourth interface can be consistent with the length extension direction of the second interface, that is, the length extension direction of the third interface can be parallel to the polygon.
  • the extension direction of the first side of the outline and the extension direction of the length of the fourth interface are parallel to the extension direction of the second side of the polygonal outline.
  • the first interface 210 and the second interface 220 of the printed circuit board are electrically connected to each other, the third interface 230 and the fourth interface 240 of the printed circuit board are electrically connected to each other, and the printed circuit board
  • the polygonal outline includes a third side 203 opposite to the first side 201, the first interface 210 and the second interface 220 are closer to the first side 201 than the third interface 230 and the fourth interface 240, the third interface 230 and The fourth interface 240 is closer to the third side 203 than the first interface 210 and the second interface 220 .
  • the first interface 210 and the third interface 230 of the printed circuit board can respectively receive power signals from the controller and image data signals and control signals required by the display panel for image display via the connection device.
  • the first interface 210 and the third interface 230 transmit the received signals to the second interface 220 and the fourth interface 240 respectively.
  • another signal processing circuit such as a voltage conversion circuit, is provided on the electrical connection path of the first interface 210 and the second interface 220 .
  • the voltage conversion circuit boosts or steps down the power supply voltage received by the first interface 210 to obtain a voltage suitable for operating the integrated circuit chip or active element on the display panel.
  • the electrical connection path between the first interface 210 and the second interface 220 may also be provided with peripheral circuits required for the operation of the integrated circuit chip on the display panel.
  • the circuit connection path between the third interface 230 and the fourth interface 240 can also be provided with a voltage conversion circuit and peripheral circuits required for the operation of the integrated circuit chip on the display panel.
  • the first interface 210 and the second interface 220 are closer to the first side 201 than the third interface 230 and the fourth interface 240
  • the third interface 230 and the fourth interface 240 are closer than the first interface 210 and the second interface 220 .
  • Being close to the third side 203 opposite to the first side 201 is beneficial to reducing signal interference between the signal path between the first interface 210 and the second interface 220 and the signal path between the third interface 230 and the fourth interface 240 .
  • the second interface 220 and the fourth interface 240 can be electrically connected to the black and white liquid crystal display panel and the color liquid crystal display panel respectively, using the first interface and the second interface provided by this embodiment.
  • the arrangement of the interface, the third interface and the fourth interface can effectively reduce the mutual interference of signals received by the black and white liquid crystal display panel and the color liquid crystal display panel, and improve the image display quality of the display panel.
  • the embodiment shown in Figure 3 illustrates a similar technical solution. As shown in Figure 3, the first interface 310 and the second interface 320 of the printed circuit board are electrically connected to each other, and the third interface 330 and the fourth interface of the printed circuit board are electrically connected to each other.
  • the polygonal outline of the printed circuit board includes a third side 303 opposite to the first side 301, and the first interface 310 and the second interface 320 are closer to the first interface than the third interface 330 and the fourth interface 340.
  • Side 301, the third interface 330 and the fourth interface 340 are closer to the third side 303 than the first interface 310 and the second interface 320.
  • the third side 203 and the second side 202 of the polygonal outline of the printed circuit board may be adjacent, or there may be other sides of the polygonal outline between the third side 203 and the second side 202 of the polygonal outline of the printed circuit board.
  • the extending direction of the third side of the printed circuit board intersects the extending direction of the second side, and they form a fifth included angle, and the fifth included angle is smaller than the third included angle formed by the first side and the second side. angle.
  • the fifth included angle is between 60-70 degrees.
  • the angle formed by the intersection of the extending direction of the third side 303 and the extending direction of the second side 302 of the polygonal outline of the printed circuit board shown in Figure 3 is smaller than the included angle formed by the first side 301 and the second side 302.
  • the polygonal outline of the printed circuit board includes a third side 403 and a fourth side 404, and each of the extension direction 401A of the first side 401 and the extension direction 402A of the second side 402 is related to The extension direction 403A of the third side 403 intersects, the fourth side 404 and the third side 403 are opposite to each other, and each of the extension direction 401A of the first side 401 and the extension direction 402A of the second side 402 is consistent with the extension of the fourth side 404
  • Direction 404A intersects, the first interface 410 and the second interface 420 are closer to the third side 403 than the third interface 430 and the fourth interface 440, and the third interface 430 and the fourth interface 440 are closer to the third side 403 than the first interface 410 and the fourth interface 440.
  • the second interface 420 is closer to the fourth side 404.
  • this embodiment can reduce signal interference between the signal path between the first interface 410 and the second interface 420 and the signal path between the third interface 430 and the fourth interface 440, which is beneficial to improving the quality of the display image on the display panel. quality.
  • the extension direction of the third side 403 of the polygonal outline of the printed circuit board intersects the extension direction of the second side 402 to form a sixth included angle
  • the extension direction of the fourth side 404 intersects with the extension direction of the second side 402.
  • the extending directions intersect to form a seventh included angle, and the sixth included angle and the seventh included angle are between 60-80 degrees.
  • Figure 4b illustrates an outline of a printed circuit board and some interfaces on the printed circuit board provided in accordance with another embodiment of the present disclosure.
  • the polygonal outline of the printed circuit board includes a first side 401, a second side 402 opposite the first side, a third side 403, and a fourth side 404 opposite the third side.
  • the printed circuit board includes a first interface 410, a second interface 420, a third interface 430 and a fourth interface 440.
  • Each of the extension direction 430A and the length extension direction 440A of the fourth interface 440 is parallel to the extension direction of the second side 402 .
  • the printed circuit board may also include additional interfaces.
  • the printed circuit board further includes a fifth interface 250 configured to be electrically connected to the controller to implement fifth signal interaction between the printed circuit board 200 and the controller; and a sixth interface 260 , It is configured to be electrically connected to the fifth interface 260 and the display panel 100 to implement a sixth signal interaction between the printed circuit board 200 and the display panel, so that the display panel 100 is under the control of the controller and the printed circuit board 200 Perform image display.
  • the fifth interface 250 is closer to the first side 201 than the sixth interface 260, and the sixth interface 260 is closer to the second side 202 than the fifth interface 250.
  • the picture of the printed circuit board shown in FIG. 3 also shows the fifth interface 350 and the sixth interface 360 .
  • the display panel requires a backlight to achieve normal image display.
  • a backlight module is required to provide backlight for the display panel.
  • the sixth interface of the printed circuit board can be electrically connected to the backlight module to provide the backlight module with a backlight.
  • the fifth interface is electrically connected to the controller to receive the backlight module signal from the controller. In the embodiment shown in FIG.
  • the length extension direction 350A of the fifth interface 350 is consistent with the length extension direction 310A of the first interface 310 , and the length extension direction 350A of the fifth interface 350 and the extension direction of the second side 302 form a
  • the included angle is 70-80 degrees.
  • the length extension direction 360A of the sixth interface 360 and the extension direction of the second side 302 form an included angle of 60-70 degrees.
  • the printed circuit board includes a fifth interface 450 and a sixth interface 460.
  • the length extension direction 450A of the fifth interface 450 and the extension direction 402A of the second side 402 form an included angle of 10-20 degrees.
  • the polygonal outline of the printed circuit board includes a hexagon, and the first side and the second side are adjacent in the hexagon. Two sides or two sides opposite each other.
  • the fact that the polygonal outline of the printed circuit board is a hexagonal shape does not mean that the polygonal outline necessarily includes six straight line segments surrounding a hexagonal shape, but it may mean that the polygonal outline is approximate to a hexagonal shape.
  • some sides of a hexagonal outline may not be straight segments, but may have arbitrary curved portions.
  • the intersection of adjacent sides of a hexagonal profile can also exhibit arbitrary chamfers.
  • the specific shape of the polygonal outline of the printed circuit board is not limited to the embodiments described herein. In some cases, the shape of the polygonal outline of the printed circuit board may be consistent with or approximate the shape of the outline of the display panel. Therefore, the polygonal outline of the printed circuit board shown in the drawings of the present disclosure only schematically represents the non-rectangular shape, and does not limit the specific shape of the outline of the printed circuit board.
  • the above-mentioned first interface, second interface, third interface, and fourth interface are located on the first side of the printed circuit board body, and the printed circuit board further includes: located on the first side of the printed circuit board body.
  • electrical components the electrical components include at least one of an integrated circuit chip (for example, a memory, the aforementioned voltage conversion circuit, etc.), a resistor and a capacitor, and the first interface, the second interface, the third interface and the fourth interface
  • the height of each of the interfaces on the first side is 2 to 15 times the height of the electrical component on the first side.
  • the printed circuit board body mentioned here refers to the structure in the printed circuit board used to carry the above-mentioned interfaces and electrical components.
  • the printed circuit board body can correspond to the above-mentioned interfaces and electrical components that have not been installed on the printed circuit board. status at the time.
  • the height mentioned here refers to the distance that any component on the printed circuit board (eg, the first interface) protrudes from the first side of the printed circuit board body in a direction away from the printed circuit board body.
  • the height of the first interface, the second interface, the third interface, and the fourth interface on the first side of the printed circuit board body is approximately 2.5 mm, while the height of other electrical components is 0.2-1.2 mm.
  • the first side of the printed circuit board body includes an electrical component located between any one of the first interface, the second interface, the third interface, and the fourth interface.
  • a component-free area wherein the diameter of the component-free area is greater than or equal to 1.5 mm.
  • the component-free area here refers to the area where no components are installed. That is to say, there is a component-free area of at least 1.5mm between each interface of the printed circuit board and the electrical components, which can reduce the interaction between each interface and other electrical components.
  • the application scenario of the printed circuit board described in the above embodiments can be determined by the application scenario of the display panel.
  • the display panel can be applied to any occasion where image display is required, for example, used in image display platforms in various vehicles.
  • Figure 5 illustrates an image display platform in a car cab, which includes an auxiliary screen 510, an instrument display 520 and a central control display 530. As can be seen from FIG. 5 , at least some display screens (for example, the auxiliary screen 510 or the central control display screen 530 ) present a non-rectangular shape.
  • the principles disclosed in the printed circuit boards proposed in the embodiments of the present disclosure can be used to design corresponding The printed circuit board, especially the layout of the various interfaces of the printed circuit board on the printed circuit board body, to enhance the reliability and stability of the connection between each display screen and the car's control system, thereby improving the image display of the display screen quality.
  • Figure 6 schematically shows an example in which the printed circuit board shown in Figure 3 or Figure 4a is applied to an auxiliary screen in a car cab.
  • the car's image display platform includes a left auxiliary screen LC and a right auxiliary screen RC.
  • the left auxiliary screen LC and the right auxiliary screen RC shown in FIG. 6 may exist in the same vehicle.
  • the vehicle may include only one of the left auxiliary screen LC and the right auxiliary screen RC.
  • the left auxiliary screen and the right auxiliary screen may respectively include BD cell display panels.
  • the printed circuit board shown in Figure 4a or Figure 3 can be used to drive the corresponding display panel.
  • the right auxiliary screen RC is obtained by rotating a certain angle clockwise based on the left auxiliary screen RC. That is, the display panels applied to the left auxiliary screen LC and the right auxiliary screen RC can adopt exactly the same design. Therefore, whether the auxiliary screen is set on the left side of the vehicle cockpit, the auxiliary screen is set on the right side of the vehicle cockpit, or the auxiliary screens are set on both the left and right sides of the vehicle cockpit for the display of each auxiliary screen
  • the panel can be based on the same, and the printed circuit board used to drive the display panel of each auxiliary screen can also have the same outline. It only needs to be made on the orientation layout of each interface of the printed circuit board for different auxiliary screens and the layout of the signal traces. Differentiated design is enough. In this way, the application of the display panel on different models or types of vehicles or at different locations on the same vehicle is achieved at a lower cost.
  • FIG. 7 illustrates printed circuit board 700A attached to display panel 700B.
  • the printed circuit board 700A at least includes a first interface 710, a second interface 720, a third interface 730, and a fourth interface 740.
  • the first interface 710, the second interface 720, the third interface 730, and the fourth interface 740 may correspond to the first interface 410, the second interface 420, the third interface 430 and the fourth interface 440 shown in FIG.
  • the layout of the fourth interface 740 on the printed circuit board body is also the same as the layout of the first interface 410, the second interface 420, the third interface 430 and the fourth interface 440 shown in Figure 4a.
  • the polygonal outline of printed circuit board 700A is substantially the same as the outline of display panel 700B.
  • Figure 8 illustrates printed circuit board 800A attached to display panel 800B.
  • the printed circuit board 800A at least includes a first interface 810, a second interface 820, a third interface 830, and a fourth interface 840.
  • the first interface 810, the second interface 820, the third interface 830, and the fourth interface 840 may correspond to the first interface 310, the second interface 320, the third interface 330 and the fourth interface 340 shown in FIG. 3 respectively in terms of functions, and the first interface 810, the second interface 820 and the third interface 830
  • the layout of the fourth interface 840 on the printed circuit board body is also the same as the layout of the first interface 310 , the second interface 320 , the third interface 330 and the fourth interface 340 shown in FIG. 3 .
  • the polygonal outline of printed circuit board 800A is substantially the same as the outline of display panel 800B.
  • a display device which includes a display panel and a printed circuit board as described in any of the preceding embodiments.
  • the printed circuit board is connected to the display panel via a first flexible electrical connector, a first end of the first flexible electrical connector is connected to the second interface of the printed circuit board, and a second end of the first flexible electrical connector is connected to the display panel. terminal is connected to the display panel.
  • the first flexible electrical connector may be a flexible printed circuit board (FPC).
  • connection devices there may be multiple connection devices between the display panel and the printed circuit board.
  • the display panel in the case where the display panel is a BD cell display panel, the display panel includes a first liquid crystal display panel and a second liquid crystal display panel that are sequentially arranged along the light emitting direction of the display device.
  • the display device includes a first flexible electrical connector and a second flexible electrical connector.
  • FIG. 9 schematically illustrates a partial cross-sectional view of a display device according to an embodiment of the present disclosure.
  • the printed circuit board 910 is separated from the display panel. status. As shown in FIG.
  • the display device includes a printed circuit board 910 and a display panel.
  • the display panel includes a first liquid crystal display panel 920 and a second liquid crystal display panel 930 that are sequentially arranged along the light emitting direction of the display device.
  • the display device also includes a first flexible electrical connector CA1 and a second flexible electrical connector CA2.
  • the first end of the first flexible electrical connector CA1 is connected to the second interface 910b of the printed circuit board 910.
  • the first flexible electrical connector CA1 The second end is connected to the first liquid crystal display panel 920 .
  • the first end of the second flexible electrical connector CA2 is connected to the fourth interface 910a of the printed circuit board, and the second end of the second flexible electrical connector CA2 is connected to the second liquid crystal display panel 930 .
  • the second interface 910b and the fourth interface 910a of the printed circuit board mentioned here may respectively correspond to the second interface 420 and the fourth interface 440 shown in FIG. 4a in terms of function and layout.
  • the second interface 910a shown in FIG. 3 The interface 320 and the fourth interface 340, or the second interface 220 and the fourth interface 240 shown in FIG. 1 .
  • the first flexible electrical connector CA1 and the second flexible electrical connector CA2 may include a flexible printed circuit board FPC.
  • the first liquid crystal display panel among the display panels includes a first source driver 920a
  • the second among the display panels includes a second source driver 930a
  • the first flexible electrical connector CA1 The second end of the second flexible electrical connector CA2 is connected to the first source driver 920a
  • the second end of the second flexible electrical connector CA2 is connected to the second source driver 930a
  • the length extension direction of the second interface 910b of the printed circuit board 910 is parallel to the first source driver
  • the length extension direction of the fourth interface 910a of the printed circuit board 910 is parallel to the length extension direction of the second source driver 930a.
  • the first or second source driver mentioned here is usually in the form of an integrated circuit chip, which provides signals for image display, including data signals, to the pixel circuit of the display panel.
  • the orthographic projections of the first source driver 920a and the second source driver 930a on the light exit surface of the display device may partially overlap and fully overlap.
  • both the first source driver and the second source driver of the display panel are illustrated as 110 .
  • the display device may include a backlight module that provides backlight for the display panel.
  • the printed circuit board 910 is located on the side of the backlight module 940 away from the display panel. Accordingly, in this embodiment, there may be signal interaction between the printed circuit board 910 and the backlight module 940 to achieve power supply and lighting control of the backlight module.
  • the printed circuit board 910 may be similar to the printed circuit board shown in Figure 1, Figure 3 or Figure 4a.
  • the printed circuit board includes a fifth interface and a sixth interface.
  • the fifth interface is electrically connected to the controller to implement The fifth signal interaction between the printed circuit board and the controller; the sixth interface is electrically connected to the backlight module to realize the sixth signal interaction between the printed circuit board and the backlight module, so that the The display panel displays images under the control of the controller, the printed circuit board and the backlight module.
  • the fifth interface and the sixth interface are directly connected via internal traces of the printed circuit board.
  • the image display system includes a controller and the display device as described in any one of the preceding embodiments.
  • the controller is at least connected to the third part of the printed circuit board.
  • An interface is electrically connected, so that the display panel displays images under the control of the controller and the printed circuit board.
  • the controller may be electrically connected to the third interface.
  • the controller may be configured to provide the display panel with a power signal and a control signal required for the display panel to display an image via the printed circuit board.
  • the main components of the image display system can be schematically explained with the help of Figure 2 .
  • the image display system includes a controller CON, a printed circuit board 200, and a display panel 100.
  • Examples of the display panel 100 include, but are not limited to, a liquid crystal display panel and an organic light emitting diode display panel.
  • two connection devices are provided between the display panel 100 and the printed circuit board 200 and between the printed circuit board 200 and the controller CON.
  • the connection device implements signal transmission between the display panel 100 and the printed circuit board 200, and signal transmission between the printed circuit board 200 and the controller CON.
  • the specific form of the controller CON may vary depending on the specific application scenario of the display panel 100 .
  • the display panel 100 can be applied in the cockpit of a vehicle.
  • the controller CON can be an electronic control device or an electronic control system of the vehicle, and the image display system is a vehicle-mounted image display system.
  • the display panel can also be applied to any other indoor or outdoor display platform.

Abstract

提供了一种印刷电路板以及包括该印刷电路板的显示设备和图像显示系统。该印刷电路板用于驱动显示面板且包括多边形轮廓,多边形轮廓包括第一边和第二边,第一边的延伸方向和第二边的延伸方向相交且不垂直。印刷电路板包括:第一接口,其被配置成与控制器电连接以实现印刷电路板与控制器之间的第一信号交互;以及第二接口,其被配置成与显示面板电连接以实现印刷电路板和显示面板之间的第二信号交互,从而使得显示面板在控制器和印刷电路板的控制下进行图像显示。第一接口的长度延伸方向与第一边的延伸方向形成第一夹角,第二接口的长度延伸方向与第二边的延伸方向形成第二夹角第一夹角和第二夹角中的每个不大于20度。

Description

印刷电路板、包括该印刷电路板的显示设备和图像显示系统 技术领域
本公开涉及电子技术领域,具体地,涉及一种印刷电路板(PCB)、包括该印刷电路板的显示设备和图像显示系统。
背景技术
得益于半导体技术和电子技术的快速发展,显示面板已经广泛地应用在工业生产和人们的日常生活中。为了方便制作,显示面板的外形通常被设计成矩形形状。随着显示面板的应用场景的逐渐丰富,人们也开始追求显示面板的个性化设计,将显示面板的轮廓设计成非规则形状,例如,应用于车辆或其他交通工具内部空间的显示仪表的显示面板往往期望被设计成具有非规则形状以提升内部空间的装饰效果。然而,即使是在这些应用场景中,用于驱动显示面板的印刷电路板仍被设计为矩形形状。在实践中,印刷电路板通常布置在显示面板下方,并在某种程度上充当一种中间部件。一方面,印刷电路板往往需要从外部控制器(例如,车辆控制系统)接收相关的控制信号和电源信号,另一方面,印刷电路板与显示面板之间存在信号交互,印刷电路板将来自于外部控制器的相关信号传输至显示面板,同时,印刷电路板也可向外部控制器传输显示面板的反馈信号或者显示面板接收到的输入信号,由此,显示面板在外部控制器的控制下实现期望的图像显示或者用户与应用该显示面板的设备之间的互动。
发明内容
本公开的实施例提供了一种印刷电路板,该印刷电路板用于驱动显示面板且包括多边形轮廓,所述多边形轮廓包括第一边和第二边,所述第一边的延伸方向和所述第二边的延伸方向相交且不垂直,所述印刷电路板包括:第一接口,其被配置成与控制器电连接以实现所述印刷电路板与控制器之间的第一信号交互;以及第二接口,其被配置成与所述显示面板电连接以实现所述印刷电路板和所述显示面板之间的第二信号交互,从而使得所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示。第一接口的长度延伸方向与所述第一边 的延伸方向形成第一夹角,第二接口的长度延伸方向与所述第二边的延伸方向形成第二夹角,所述第一夹角和所述第二夹角中的每个不大于20度。
在一些实施例中,印刷电路板还包括:第三接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第三信号交互;以及第四接口,其被配置成与所述显示面板电连接以实现所述印刷电路板和所述显示面板之间的第四信号交互,从而使所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示。所述第三接口的长度延伸方向与所述第一接口的长度延伸方向一致,所述第四接口的长度延伸方向与所述第二接口的长度延伸方向一致。
在一些实施例中,所述多边形轮廓的所述第一边与所述多边形轮廓的所述第二边相邻。
在一些实施例中,所述第一边的延伸方向和所述第二边的延伸方向相交形成第三夹角,所述第三夹角在70-80度之间。
在一些实施例中,所述第一接口和所述第二接口相互电连接,所述第三接口和所述第四接口相互电连接,所述多边形轮廓包括与所述第一边彼此相对的第三边,其中所述第一接口和所述第二接口相比于所述第三接口和所述第四接口所述更靠近所述第一边,所述第三接口和所述第四接口相比于所述第一接口和所述第二接口更靠近所述第三边。
在一些实施例中,所述第三边的延伸方向与所述第二边的延伸方向相交形成第五夹角,所述第五夹角小于所述第三夹角。
在一些实施例中,所述多边形轮廓的所述第一边与所述多边形轮廓的第二边彼此相对。
在一些实施例中,所述第一边的延伸方向和所述第二边的延伸方向相交形成第四夹角,所述第四夹角在20-30度之间。
在一些实施例中,所述第一接口的长度延伸方向、第二接口的长度延伸方向、第三接口的长度延伸方向以及第四接口的长度延伸方向中的每个平行于所述第二边的延伸方向。
在一些实施例中,所述第一接口和所述第二接口相互电连接,所述第三接口和所述第四接口相互电连接,其中所述印刷电路板的多边形轮廓还包括:第三边,所述第一边的延伸方向和所述第二边的延伸 方向中的每个与所述第三边的延伸方向相交,与所述第三边相对的第四边,所述第二边的延伸方向和所述第一边的延伸方向中的每个与所述第四边的延伸方向相交,所述第一接口和所述第二接口相比于所述第三接口和所述第四接口所述更靠近所述第三边,所述第三接口和所述第四接口相比于所述第一接口和所述第二接口更靠近所述第四边。
在一些实施例中,所述印刷电路板还包括:第五接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第五信号交互;第六接口,其被配置成与背光模组电连接以实现所述印刷电路板与所述背光模组之间的第六信号交互,从而使得所述显示面板在所述控制器、所述印刷电路板和所述背光模组的控制下进行显示图像,所述第五接口相对于所述第六接口更靠近所述第一边,所述第六接口相对于所述第五接口更靠近所述第二边。
在一些实施例中,所述第五接口的长度延伸方向和所述第一接口的长度延伸方向一致,且所述第五接口的长度延伸方向和所述第二边的延伸方向形成70-80度的夹角,所述第六接口的长度延伸方向和所述第二边的延伸方向形成60-70度的夹角。
在一些实施例中,所述第五接口的长度延伸方向和所述第二边的延伸方向形成10-20度的夹角,所述第六接口的长度延伸方向和所述第二边的延伸方向形成60-70度的夹角。
在一些实施例中,所述第一夹角和所述第二夹角中的每个为0度,使得所述第一接口的长度延伸方向平行于所述多边形轮廓的所述第一边的延伸方向,所述第二接口的长度延伸方向平行于所述多边形轮廓的所述第二边的延伸方向。
在一些实施例中,所述多边形轮廓包括六边形,所述第一边和所述第二边为所述六边形中相邻的两边或者彼此相对的两边。
在一些实施例中,所述第一接口、第二接口、第三接口和第四接口位于所述印刷电路板的印刷电路板本体的第一侧,所述印刷电路板还包括位于所述印刷电路板本体的所述第一侧上的电气元件,所述电气元件包括集成电路芯片、电阻器和电容器中的至少一个,所述第一接口、第二接口、第三接口和第四接口中的每个在所述第一侧上的高度是所述电气元件在所述第一侧上的高度的2至15倍。
在一些实施例中,所述印刷电路板本体的所述第一侧包括位于所述第一接口、所述第二接口、所述第三接口和所述第四接口中的任何一个和所述电气元件之间的无元件区域,其中所述无元件区域的直径大于等于1.5mm。
本公开的另一实施例提供了一种显示设备,包括:如前述实施例中任一实施例所述的印刷电路板;第一柔性电连接器;以及显示面板,所述第一柔性电连接器的第一端与所述印刷电路板的所述第二接口连接,所述第一柔性电连接器的第二端连接至所述显示面板。
根据本公开的另外的实施例,显示设备,包括::如前述实施例中任一实施例所述的印刷电路板;第一柔性电连接器;第二柔性电连接器,以及显示面板,所述显示面板包括沿着所述显示设备的出光方向依次设置的第一液晶显示面板和第二液晶显示面板,所述第一柔性电连接器的第一端与所述印刷电路板的所述第二接口连接,所述第一柔性电连接器的第二端连接至所述第一液晶显示面板;所述第二柔性电连接器的第一端与所述印刷电路板的第四接口连接,所述第二柔性电连接器的第二端连接至所述第二液晶显示面板。
在一些实施例中,所述第一液晶显示面板包括第一源驱动器,所述第二液晶显示面板包括第二源驱动器,其中所述第一柔性电连接器的第二端连接至所述第一源驱动器,所述第二柔性电连接器的第二端连接至所述第二源驱动器,所述第二接口的长度延伸方向平行于所述第一源驱动器的长度延伸方向,所述第四接口的长度延伸方向平行于所述第二源驱动器的长度延伸方向。
在一些实施例中,所述显示设备包括为所述显示面板提供背光的背光模组,所述印刷电路板位于所述背光模组背离所述显示面板的一侧。
在一些实施例中,所述印刷电路板还包括:第五接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第五信号交互;第六接口,其被配置成与背光模组电连接以实现所述印刷电路板与所述背光模组之间的第六信号交互,从而使得所述显示面板在所述控制器、所述印刷电路板和所述背光模组的控制下进行显示图像。
本公开的又一实施例提供了一种图像显示系统,包括:控制器;以及如前述实施例中任一实施例所述的显示设备,所述控制器至少与 所述印刷电路板的所述第一接口电连接,从而使得所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示。
以上概述了本公开的一些实施例,基于一些实施例的组合以及不同实施例中特征的组合可以获得另外的不同实施例,这些不同实施例同样属于本公开的保护范围。
附图说明
现在将更详细并且参考附图来描述本公开的实施例。能够理解到的是,附图中示出的印刷电路板和包括该印刷电路板的电子设备的截面图或俯视图仅示意性地表示印刷电路板或电子设备的与本公开实施例所描述的技术方案相关的部分结构或部分元件,并不代表实际的产品结构。
图1示意性地图示了根据本公开的一个实施例的印刷电路板轮廓以及与该印刷电路板电连接的显示面板的轮廓;
图2示意性地图示了根据本公开的一个实施例的印刷电路板与显示面板之间、以及印刷电路板和控制器之间的连接关系;
图3示意性地图示了根据本公开的另一实施例的印刷电路板的实物图片;
图4a示意性地图示了根据本公开的另一实施例的印刷电路板的轮廓以及印刷电路板的部分接口;
图4b示意性地图示了根据本公开的另一实施例的印刷电路板的轮廓以及印刷电路板的部分接口;
图5示意性地图示了可应用本公开各实施例的印刷电路板的应用场景的示例;
图6示意性地图示了如图1或图3所示的印刷电路板应用于汽车驾驶室内的辅助屏的示例;
图7和图8示意性地图示了根据本公开不同实施例提供的印刷电路板与对应的显示面板结合的示例;
图9示意性地图示了根据本公开实施例提供的图像显示系统的局部截面结构图。
具体实施方式
下面的描述提供了本公开的各种实施例的特定细节,以便本领域的技术人员能够充分理解和实施本公开的各种实施例。在某些情况下,本公开并没有示出或详细描述一些本领域熟知的结构或功能,以避免这些不必要的描述使对本公开的实施例的描述模糊不清。本专利申请的技术方案可以体现为许多不同的形式和目的,并且不应局限于本文所阐述的实施例。提供这些实施例是为了使得本公开的技术方案清楚完整,但所述实施例并不限定本专利申请的保护范围。
本文提到的“显示设备”指的是具有图像功能的电子装置,显示设备的示例包括但不限于液晶显示器、有机发光二极管显示器等。在本文中,将显示设备中除与显示设备的图像显示功能无直接关联的辅助性部件(例如,外边框、背光模组等)之外的全部元件的整体称为显示面板,换言之,显示面板具有基本的图像显示功能,是显示设备实现图像显示功能的核心部件。例如,液晶显示面板至少包括阵列基板、彩膜基板以及位于阵列基板和彩膜基板之间的液晶层。有机发光二极管显示面板至少包括阵列基板以及制作或安装在该阵列基板上的有机光二极管元件。本文提到的诸如“第一夹角”、“第二夹角”等之类的各个“夹角”指的是两条直线相交形成的非钝角的角度。
如前所述,随着显示面板应用场景的逐渐丰富和多样化,已经出现非矩形形状的显示面板,从而突显应用该显示面板的产品的个性。但是,用于驱动显示面板的印刷电路板仍保持矩形形状,相应地,印刷电路板本体上的各个元件也以规则的方式布置,即,以“横平竖直”的方式设置在印刷电路板本体的表面。本专利申请的发明人意识到,在涉及非规则外形的显示面板的应用场景中,使用常规矩形形状的印刷电路板,印刷电路板与显示面板、以及印刷电路板和外部控制器之间的信号连接的稳定性或可靠性受到较大的挑战。
本公开的实施例提供了一种用于驱动显示面板的印刷电路板,印刷电路板包括多边形轮廓,所述多边形轮廓包括第一边和第二边,所述第一边的延伸方向和所述第二边的延伸方向相交且不垂直。该印刷电路板包括:第一接口,其被配置成与控制器电连接以实现印刷电路板与控制器之间的第一信号交互;以及第二接口,其被配置成与显示面板电连接以实现印刷电路板和所述显示面板之间的第二信号交互,从而使显示面板在控制器和印刷电路板的控制下进行图像显示。第一 接口的长度延伸方向与多边形轮廓的第一边的延伸方向形成第一夹角,第二接口的长度延伸方向与多边形轮廓的第二边的延伸方向形成第二夹角,第一夹角和所述第二夹角中的每个不大于20度。
本文提到的诸如“第一接口”、“第二接口”之类的各个接口指的是印刷电路板实现其与外部元件(例如,连接至显示面板或者控制器的电连接器)之间的电连接的连接端口,接口的示例包但不限于印刷电路板接线端子或印刷电路板连接器。本文提到的与各个接口相关的“长度延伸方向”指的是该接口在印刷电路板本体上的正投影的轮廓中长度最长的边的延伸方向。例如,在第一接口在印刷电路板本体上的正投影的轮廓为矩形的情况下,第一接口的长度延伸方向指的是第一接口的矩形轮廓的长边的延伸方向。本文提到的“控制器”指的是为显示面板显示图像提供所需要的信号的装置或系统,“控制器”的具体形式可能根据显示面板的应用场景而变化,控制器可以是单个的集成电路芯片,也可以是包括多个集成电路芯片以及多个集成电路芯片之间的外围电路的系统。显示面板在运行时从控制器接收显示图像所需的信号,因此,上述控制器可以成为“主机”。例如,在显示面板应用于汽车驾驶舱内的仪表显示系统时,控制器可以是汽车的电子控制器(ECU)。
在本公开的实施例中,印刷电路板包括多边形轮廓,多边形轮廓的第一边的延伸方向和第二边的延伸方向相交且不垂直,这意味着印刷电路板的轮廓为非矩形形状。在一些实施例中,印刷电路板的轮廓可以与显示面板的轮廓相同或基本一致,也就是说,可以基于显示面板的轮廓确定印刷电路板的轮廓。印刷电路板包括第一接口和第二接口,从而使得印刷电路板能够分别与控制器和显示面板电连接,使得显示面板在控制器和印刷电路板的控制下进行图像显示。第一接口的长度延伸方向与印刷电路板的多边形轮廓的第一边的延伸方向形成第一夹角,第二接口的长度延伸方向与印刷电路板的多边形轮廓的第二边的延伸方向形成第二夹角,所述第一夹角和所述第二夹角中的每个不大于20度。也就是说,第一接口的长度延伸方向与印刷电路板的多边形轮廓的第一边的延伸方向平行或者二者之间的偏差不大于20度,第二接口的长度延伸方向与印刷电路板的多边形轮廓的第二边的延伸方向平行或二者之间的偏差不大于20度。由于本实施例提供的印刷电 路板的第一接口和第二接口并不像常规的印刷电路板的接口那样“横平竖直”地布置,第一接口和第二接口的长度延伸方向与印刷电路板的多边形轮廓的第一边或第二边的延伸方向保持一致或者偏差较小,所以可以更灵活地调整显示面板和控制器相对于印刷电路板的空间定位,优化印刷电路板与显示面板或控制器之间的连接装置的空间布局,避免或降低显示面板和印刷电路板之间以及印刷电路板和控制器之间的连接装置的扭曲或变形,从而增强印刷电路板与显示面板或控制器之间的电连接的可靠性和稳定性,有利于提升显示面板的图像显示效果。
下面通过具体的示例进一步说明本公开实施例提出印刷电路板。图1示意性地示出了显示面板100和印刷电路板200以及显示面板100和印刷电路板200之间的连接装置310、320。为了清楚起见,图1中所示的显示面板100和印刷电路板200处于未连接的状态。如图1所示,印刷电路板200包括多边形轮廓,多边形轮廓包括第一边201和第二边202,第一边201的延伸方向201A和第二边202的延伸方向202A相交且不垂直。印刷电路板包括第一接口210和第二接口220,第一接口210与控制器(图1中未示出)电连接以实现印刷电路板200与控制器之间的第一信号交互,第二接口220与显示面板100电连接以实现印刷电路板200和显示面板100之间的第二信号交互,从而使显示面板100在控制器和印刷电路板200的控制下进行图像显示。第一接口210的长度延伸方向210A与多边形轮廓的第一边的延伸方向201A形成第一夹角,第二接口220的长度延伸方向220A与多边形轮廓的第二边的延伸方向202A形成第二夹角,第一夹角和所述第二夹角中的每个不大于20度。用于将控制器连接至印刷电路板200的连接装置可以在印刷电路板200的第一边201附近与第一接口210连接,显示面板100和印刷电路板200之间的连接装置(例如,图中所示的连接装置310、320)可以在印刷电路板200的第二边202附近与第二接口220连接,由于第一接口210的长度延伸方向和第一边201的延伸方向之间的偏差较小,第二接口220的长度延伸方向和第二边202的延伸方向之间的偏差较小,所以显示面板和印刷电路板之间以及印刷电路板和控制器之间的连接装置的扭曲或变形的可能性得以降低,第一接口210和第二接口220与对应的连接装置连接处的受力得以减小, 从而增强第一接口和第二接口与对应的连接装置之间的连接的稳定性。例如,图1中所示的显示面板100和印刷电路板200之间的连接装置310可以是诸如柔性印刷电路板FPC之类的柔性连接器,当显示面板100通过柔性连接器310连接至印刷电路板的第二接口220时,柔性连接器310不会发生扭曲或扭曲的程度较低,从而有利于实现印刷电路板200和显示面板之间的良好电连接。
在一些实施例中,第一接口的长度延伸方向与印刷电路板的多边形轮廓的第一边的延伸方向之间的第一夹角不大于10度,第二接口的长度延伸方向与印刷电路板的多边形轮廓的第二边的延伸方向之间的第二夹角不大于10度。在其他实施例中,第一接口的长度延伸方向与印刷电路板的多边形轮廓的第一边的延伸方向之间的第一夹角以及第二接口的长度延伸方向与印刷电路板的多边形轮廓的第二边的延伸方向之间的第二夹角均为0度,即,第一接口的长度延伸方向平行于印刷电路板的多边形轮廓的第一边的延伸方向,第二接口的长度延伸方向平行于印刷电路板的多边形轮廓的第二边的延伸方向。这样可以更好地保证印刷电路板的第一接口和第二接口与对应的连接装置之间的连接的可靠性,增强印刷电路板与控制器和显示面板之间的信号传输的稳定性。
根据本公开的另一实施例,印刷电路板还包括:第三接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第三信号交互;以及第四接口,其被配置成与所述显示面板电连接以实现所述印刷电路板和所述显示面板之间的第四信号交互,从而使所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示,所述第三接口的长度延伸方向与所述第一接口的长度延伸方向一致,所述第四接口的长度延伸方向与所述第二接口的长度延伸方向一致。该实施例可适用于显示面板与印刷电路板之间的信号路径较多或者显示面板包括至少两个单独从印刷电路板接收信号的模块的情形。例如,显示面板可以为BD cell(双叠屏)显示面板,即,显示面板包括双层液晶显示面板,其中一层液晶显示面板为黑白液晶显示面板,用于精准地调制亮度明暗,另一层液晶显示面板为彩色液晶显示面板,用于图像显示,两层液晶显示面板叠加从而实现高对比度的图像显示。
可以继续借助图1示例说明该实施例提供的印刷电路板。如图1所示,印刷电路板还包括第三接口230和第四接口240,第三接口230被配置成与控制器电连接以实现印刷电路板200与控制器之间的第三信号交互,第四接口240被配置成与显示面板100电连接以实现印刷电路板200和显示面板100之间的第四信号交互,从而使显示面板100在控制器和印刷电路板200的控制下进行图像显示。第三接口230的长度延伸方向240A与第一接口210的长度延伸方向210A一致,第四接口240的长度延伸方向240A与第二接口220的长度延伸方向220A一致。也就是说,第三接口230以与第一接口210类似的方式(即,第三接口230的延伸方向与第一边201的延伸方向之间的偏差较小或者二者平行)布置在印刷电路板200本体上,第四接口240以与第二接口220类似的方式(即,第四接口240的延伸方向与第二边2012延伸方向之间的偏差较小或者二者平行)布置在印刷电路板200本体上,当显示面板100通过柔性连接器320连接至印刷电路板的第四接口220时,柔性连接器320不会发生扭曲或扭曲的程度较低,实现印刷电路板200和显示面板之间的良好电连接。
图2示意性地示出了BD cell显示面板100和印刷电路板200之间的连接装置CA1、CA2、以及印刷电路板200和控制器CON之间的连接装置CA3、CA4。图2中所示的显示面板100、印刷电路板200以及控制器CON呈现矩形,但这并不表示它们的轮廓形状,图2仅是为了简便起见以方框表示这些部件。特别地,印刷电路板200和显示面板100的实际轮廓可以呈现任意的非矩形形状。印刷电路板200的第一接口和第三接口分别与连接装置CA3、CA4连接,印刷电路板200的第二接口和第四接口分别与连接装置CA1、CA2连接,连接装置CA1、CA2分别对应于图1中的连接装置310、320。利用本公开上述实施例提供的印刷电路板200,可以缓解或避免连接装置CA1、CA2、CA3以及CA4的在空间上的扭曲或变形,减小印刷电路板的各个接口与对应的连接装置连接处的受力,从而增强各个接口与对应的连接装置之间的连接的稳定性,从而提升印刷电路板200与控制器CON之间以及印刷电路板200与显示面板100之间信号传输的稳定性,提升显示面板的工作性能和图像显示效果。
在一些实施例中,控制器CON可经由连接装置CA3、CA4向印刷电路板200传输电源信号以及显示面板100进行图像显示所需的图像数据信号和控制信号,印刷电路板200将上述的电源信号、图像数据信号和控制信号传输给显示面板。显示面板100也可经由印刷电路板200向控制器CON传送显示面板自身的反馈信号以及显示面板接收到的外部输入信号。因此,以上提到的第一信号交互、第二信号交互、第三信号交互以及第四信号交互指的是显示面板在工作运行过程中显示面板与印刷电路板之间、或者印刷电路板与控制器之间的信号传输,本公开的技术方案不涉及显示面板如何显示图像,第一信号交互、第二信号交互、第三信号交互以及第四信号交互的具体细节在此不再详述。
图3示意性地示出了根据本公开一个实施例提供的印刷电路板的实物图。如图3所示,印刷电路板包括多边形轮廓,多边形轮廓包括第一边301和第二边302,第一边301的延伸方向和第二边302的延伸方向相交但不垂直,在该实施例中,第一边301和第二边302彼此相邻。印刷电路板包括第一接口310、第二接口320、第三接口330和第四接口340,第一接口310、第二接口320、第三接口330和第四接口340在功能方面可分别对应于图1中所示的第一接口210、第二接口220、第三接口230和第四接口240。根据本公开的实施例,第一边301的延伸方向和第二边302的延伸方向相交形成第三夹角θ,第三夹角θ在70-80度之间。在一个示例中,第三夹角θ为76度。
图4a图示了根据本公开的另一实施例提供的印刷电路板的轮廓以及印刷电路板上的一些接口。如图4a所示,印刷电路板400包括第一接口410、第二接口420、第三接口430和第四接口440,第一接口410、第二接口420、第三接口430和第四接口440在功能方面可分别对应于图1中所示的第一接口210、第二接口220、第三接口230和第四接口240。印刷电路板包括第一边401和第二边402,第一边401的延伸方向和第二边402的延伸方向相交且不垂直,在该实施例中,印刷电路板的多边形轮廓的第一边401与多边形轮廓的第二边402彼此相对。这里提到的“彼此相对”指的是第一边和第二边为非相邻的位置关系。如图4a所示,根据本公开的一些实施例,印刷电路板的多边形轮廓的第一边401的延伸方向401A和第二边402的延伸方向402A相交形成 第四夹角β,所述第四夹角β在20-30度之间。在该实施例中,第一接口410和第三接口430的长度延伸方向与印刷电路板的多边形轮廓的第一边401的延伸方向之间的夹角小于10度,即,第一接口410和第三接口430的长度延伸方向与印刷电路板的多边形轮廓的第一边401的延伸方向之间的偏差较小或者二者平行,印刷电路板与控制器之间的连接装置在第一边401附近连接至第一接口410或第三接口430,当印刷电路板400与控制器经由连接装置连接时,印刷电路板400和控制器之间的连接装置不会发生扭曲或扭曲的程度较低,能够增强印刷电路板400和控制器之间的连接的可靠性和稳定性。同样地,第二接口420和第四接口440的长度延伸方向与印刷电路板的多边形轮廓的第二边402的延伸方向之间的偏差较小或者二者平行,这有助于增强印刷电路板400通过第二接口420和第四接口440以及对应的连接装置连接至显示面板时的连接稳定性和可靠性。
如前所述,在一些实施例中,第一接口的长度延伸方向与印刷电路板的多边形轮廓的第一边的延伸方向之间的第一夹角以及第二接口的长度延伸方向与印刷电路板的多边形轮廓的第二边的延伸方向之间的第二夹角均为0度,使得所述第一接口的长度延伸方向平行于所述多边形轮廓的第一边的延伸方向,所述第二接口的长度延伸方向平行于所述多边形轮廓的第二边的延伸方向,这样。可以更好地保证印刷电路板的第一接口和第二接口与对应的连接装置之间的连接的可靠性,增强印刷电路板与控制器和显示面板之间的信号传输的稳定性。同样地,第三接口的长度延伸方向可以与第一接口的长度延伸方向一致,第四接口的长度延伸方向可以与第二接口的长度延伸方向一致,即第三接口的长度延伸方向平行于多边形轮廓的第一边的延伸方向,第四接口的长度延伸方向平行于多边形轮廓的第二边的延伸方向。
返回参照图1,根据本公开的一些实施例,印刷电路板的第一接口210和第二接口220相互电连接,印刷电路板的第三接口230和第四接口240相互电连接,印刷电路板的多边形轮廓包括与第一边201彼此相对的第三边203,第一接口210和第二接口220相比于第三接口230和第四接口240更靠近第一边201,第三接口230和第四接口240相比于第一接口210和第二接口220更靠近第三边203。印刷电路板的第一接口210和第三接口230可分别经由连接装置从控制器接收电源信号 以及显示面板进行图像显示所需的图像数据信号和控制信号。第一接口210和第三接口230分别将接收到的信号传输至第二接口220和第四接口240。在一些实施例中,第一接口210和第二接口220的电连接路径上设置有另外的信号处理电路,例如,电压变换电路。电压变换电路将第一接口210接收的电源电压进行升压或降压处理从而获得适合于显示面板上的集成电路芯片或有源元件工作所需要的电压。进一步地,第一接口210和第二接口220的电连接路径还可设置有显示面板上的集成电路芯片工作所需要的外围电路。类似地,第三接口230和第四接口240之间的电路连接路径也可设置电压变换电路以及显示面板上的集成电路芯片工作所需要的外围电路。第一接口210和第二接口220相比于第三接口230和第四接口240更靠近第一边201,第三接口230和第四接口240相比于第一接口210和第二接口220更靠近与第一边201相对的第三边203,这有利于降低第一接口210和第二接口220之间的信号路径与第三接口230和第四接口240之间的信号路径的信号干扰。特别地,当显示面板100为BD cell显示面板时,第二接口220和第四接口240可分别与黑白液晶显示面板和彩色液晶显示面板电连接,利用本实施例提供的第一接口、第二接口、第三接口和第四接口的布置可以有效降低黑白液晶显示面板和彩色液晶显示面板接收到的信号的彼此干扰,提升显示面板的图像显示质量。图3所示的实施例图示了类似的技术方案,如图3所述,印刷电路板的第一接口310和第二接口320相互电连接,印刷电路板的第三接口330和第四接口340相互电连接,印刷电路板的多边形轮廓包括与第一边301彼此相对的第三边303,第一接口310和第二接口320相比于第三接口330和第四接口340更靠近第一边301,第三接口330和第四接口340相比于第一接口310和第二接口320更靠近第三边303。
刷电路板的多边形轮廓的第三边203和第二边202可以相邻,或者印刷电路板的多边形轮廓的第三边203和第二边202之间还存在多边形轮廓的其它边。在一些实施例中,印刷电路板的第三边的延伸方向和第二边的延伸方向相交,二者形成第五夹角,该第五夹角小于第一边和第二边形成的第三夹角。例如,第五夹角在60-70度之间。例如,图3中所示的印刷电路板的多边形轮廓的第三边303的延伸方向和第 二边302的延伸方向相交形成的夹角小于第一边301和第二边302形成的夹角。
继续参照图4a,在一些实施例中,印刷电路板的多边形轮廓包括第三边403和第四边404,第一边401的延伸方向401A和第二边402的延伸方向402A中的每个与第三边403的延伸方向403A相交,第四边404和第三边403彼此相对,第一边401的延伸方向401A和第二边402的延伸方向402A中的每个与第四边404的延伸方向404A相交,第一接口410和第二接口420相比于第三接口430和第四接口440更靠近第三边403,第三接口430和第四接口440相比于第一接口410和第二接口420更靠近第四边404。同样地,该实施例可将降低第一接口410和第二接口420之间的信号路径与第三接口430和第四接口440之间的信号路径的信号干扰,有利于提升显示面板显示图像的质量。在图4a的实施例中,印刷电路板的多边形轮廓的第三边403的延伸方向与第二边402的延伸方向相交形成第六夹角,第四边404的延伸方向与第二边402的延伸方向相交形成第七夹角,第六夹角和第七夹角在60-80度之间。
图4b图示了根据本公开的另一实施例提供的印刷电路板的轮廓以及印刷电路板上的一些接口。如图4b所示,印刷电路板的多边形轮廓包括第一边401、与第一边相对的第二边402、第三边403以及与第三边相对的第四边404。印刷电路板包括第一接口410、第二接口420、第三接口430和第四接口440,第一接口410的长度延伸方向410A、第二接口420的长度延伸方向420A、第三接口430的长度延伸方向430A以及第四接口440的长度延伸方向440A中的每个平行于第二边402的延伸方向。
根据本公开的一些实施例,除了前述的第一接口、第二接口、第三接口和第四接口,印刷电路板还可包括另外的接口。例如,如图1所示,印刷电路板还包括第五接口250,其被配置成与控制器电连接以实现印刷电路板200与控制器之间的第五信号交互;以及第六接口260,其被配置成与第五接口260和显示面板100电连接以实现印刷电路板200与显示面板之间的第六信号交互,从而使所述显示面板100在控制器和印刷电路板200的控制下进行图像显示。第五接口250相对于第六接口260更靠近第一边201,第六接口260相对于第五接口250更靠 近第二边202。图3所示的印刷电路板的图片同样示出了第五接口350和第六接口360。在一些实施例中,显示面板实现正常的图像显示需要背光,此时,需要背光模组为显示面板提供背光,印刷电路板的第六接口可与背光模组电连接以向背光模组提供用于驱动背光模组的背光模组信号,第五接口与控制器电连接以从控制器接收所述背光模组信号。在图3所示的实施例中,第五接口350的长度延伸方向350A和第一接口310的长度延伸方向310A一致,且第五接口350的长度延伸方向350A和第二边302的延伸方向形成70-80度的夹角,第六接口360的长度延伸方向360A和第二边302的延伸方向形成60-70度的夹角。在图4b所示的实施例中,印刷电路板包括第五接口450和第六接口460,第五接口450的长度延伸方向450A和第二边402的延伸方向402A形成10-20度的夹角,第六接口460的长度延伸方向460A和第二边402的延伸方向形成60-70度的夹角。在本公开的一些实施例中,如图1、3、图4a或4b所示,印刷电路板的多边形轮廓包括六边形,第一边和所述第二边为六边形中相邻的两边或者彼此相对的两边。印刷电路板的多边形轮廓为六边形形状并不意味着多边形轮廓必然包括围成一个六边形形状的六条笔直的线段,而是可以意味着该多边形轮廓近似于六边形形状的情形。例如,六边形轮廓的一些边可以不是笔直线段,而是存在任意的弯曲部分。六边形轮廓的相邻的边的交汇处也可以呈现任意的倒角。能够理解到的是,印刷电路板的多边形轮廓的具体形状并不限制于本文描述的实施例。在一些情形中,印刷电路板的多边形轮廓的外形可以与显示面板的轮廓的外形一致或近似。因此,本公开的附图所示的印刷电路板的多边形轮廓仅仅示意性地表示非矩形形状,而并不限制印刷电路板的轮廓的具体外形。
根据本公开的一些实施例,上述的第一接口、第二接口、第三接口、第四接口位于印刷电路板本体的第一侧,印刷电路板还包括位于印刷电路板本体的第一侧上的电气元件,所述电气元件包括集成电路芯片(例如,存储器、前述的电压变换电路等)、电阻器和电容器中的至少一个,所述第一接口、第二接口、第三接口和第四接口中的每个在所述第一侧上的高度是所述电气元件在所述第一侧上的高度的2至15倍。这里提到的印刷电路板本体指的是印刷电路板中用于承载上述的各个接口以及电气元件的结构,换言之,印刷电路板本体可对应 于印刷电路板上尚未安装上述的各个接口以及电气元件时的状态。这里提到的高度指的是印刷电路板上的任一元件(例如,第一接口)从印刷电路板本体的第一侧朝背离印刷电路板本体的方向凸起的距离。在一些示例中,第一接口、第二接口、第三接口、第四接口在印刷电路板本体第一侧上的高度大约为2.5mm,而其它的电气元件的高度为0.2-1.2mm。
根据本公开的一些实施例,印刷电路板本体的第一侧包括位于所述第一接口、所述第二接口、所述第三接口和所述第四接口中的任何一个和电气元件之间的无元件区域,其中所述无元件区域的直径大于等于1.5mm。这里的无元件区域指的是没有安装任何元件的区域。也就是说,印刷电路板的各个接口与电气元件之间存在尺寸至少为1.5mm的无元件区域,这样可以降低各个接口与其他电气元件之间的相互影响。
上述实施例描述的印刷电路板的应用场景可由显示面板的应用场景确定。显示面板可应用于任何需要图像显示的场合,例如,用于各种交通工具内的图像显示平台。图5图示了汽车驾驶室内的图像显示平台,其包括辅助屏510、仪表显示屏520和中控显示屏530。从图5可以看出,至少一些显示屏(例如,辅助屏510或中控显示屏530)呈现非矩形的外形,相应地,可以运用本公开实施例提出的印刷电路板所揭示的原理设计对应的印刷电路板,特别是印刷电路板的各个接口在印刷电路板本体上的布局,以增强各个显示屏与汽车的控制系统之间的连接的可靠性和稳定性,从而提升显示屏的图像显示质量。
图6示意性地示出了如图3或图4a所示的印刷电路板应用于汽车驾驶室内的辅助屏的示例。如图6所示,汽车的图像显示平台包括左辅助屏LC和右辅助屏RC。图6所示的左辅助屏LC和右辅助屏RC可存在于同一车辆内,替代性地,车辆也可仅包括左辅助屏LC和右辅助屏RC中的一个。左辅助屏和右辅助屏可分别包括BD cell显示面板。对于图6所示的左辅助屏LC和右辅助屏RC,可以分别采用如图4a或图3所示的印刷电路板来驱动对应的显示面板。从图6可以看出,右辅助屏RC是基于左辅助屏RC顺时针旋转一定的角度而得到的,即,应用于左辅助屏LC和右辅助屏RC的显示面板可采用完全相同的设计。因此,不论是辅助屏设置在车辆驾驶舱的左侧、还是辅助屏设置 在车辆驾驶舱的右侧、或是车辆驾驶舱的左侧和右侧均设置辅助屏,用于各辅助屏的显示面板可基于相同,用于驱动各辅助屏的显示面板的印刷电路板也可具有相同的轮廓,只需对用于不同辅助屏的印刷电路板的各个接口的方位布局以及信号走线的布局作出差异化的设计即可。这样,以较低的成本实现了显示面板在不同型号或类型的车辆上或同一车辆的不同位置处的应用。
当采用本公开实施例提供的印刷电路板驱动显示面板时,印刷电路板可附接至显示面板与其图像显示表面相对的背侧。图7图示了附接至显示面板700B的印刷电路板700A。在该实施例中,印刷电路板700A至少包括第一接口710、第二接口720、第三接口730以及第四接口740,第一接口710、第二接口720、第三接口730和第四接口740在功能方面可分别对应于图4a中所示的第一接口410、第二接口420、第三接口430和第四接口440,而且,第一接口710、第二接口720、第三接口730和第四接口740在印刷电路板本体上的布局也与图4a中所示的第一接口410、第二接口420、第三接口430和第四接口440的布局相同。印刷电路板700A的多边形轮廓与显示面板700B的轮廓大致相同。
图8图示了附接至显示面板800B的印刷电路板800A。在该实施例中,印刷电路板800A至少包括第一接口810、第二接口820、第三接口830以及第四接口840,第一接口810、第二接口820、第三接口830和第四接口840在功能方面可分别对应于图3中所示的第一接口310、第二接口320、第三接口330和第四接口340,而且,第一接口810、第二接口820、第三接口830和第四接口840在印刷电路板本体上的布局也与图3中所示的第一接口310、第二接口320、第三接口330和第四接口340的布局相同。印刷电路板800A的多边形轮廓与显示面板800B的轮廓大致相同。
本公开的另一实施例提供了一种显示设备,该显示设备包括显示面板以及如前述任一实施例所述的印刷电路板。在一些实施例中,显示面板和印刷电路板之间仅存在单个的连接装置。例如,印刷电路板经由第一柔性电连接器连接至显示面板,第一柔性电连接器的第一端与所述印刷电路板的所述第二接口连接,第一柔性电连接器的第二端连接至所述显示面板。第一柔性电连接器可以是柔性印刷电路板FPC。
在另外的实施例中,显示面板和印刷电路板之间可存在多个连接装置。例如,在显示面板为BD cell显示面板的情形中,显示面板包括沿着显示设备的出光方向依次设置的第一液晶显示面板和第二液晶显示面板。此时,显示设备包括第一柔性电连接器、第二柔性电连接器。可以借助图9来示意性地说明本实施例提供的显示设备的结构。图9示意性地示出了根据本公开实施例提供的显示设备的局部截面图,为了清楚地示出第一柔性电连接器和第二柔性电连接器,印刷电路板910处于与显示面板分离的状态。如图9所示,显示设备包括印刷电路板910以及显示面板,显示面板包括沿着显示设备的出光方向依次设置的第一液晶显示面板920和第二液晶显示面板930。显示设备还包括第一柔性电连接器CA1和第二柔性电连接器CA2,第一柔性电连接器CA1的第一端与印刷电路板910的第二接口910b连接,第一柔性电连接器CA1的第二端连接至第一液晶显示面板920。第二柔性电连接器CA2的第一端与印刷电路板的第四接口910a连接,第二柔性电连接器CA2的第二端连接至第二液晶显示面板930。这里提到的印刷电路板的第二接口910b和第四接口910a在功能和布局方面可分别对应于图4a中所示的第二接口420、第四接口440,图3中所示的第二接口320、第四接口340,或者图1中所示的第二接口220、第四接口240。第一柔性电连接器CA1和第二柔性电连接器CA2可包括柔性印刷电路板FPC。
继续参照图9,在一些实施例中,显示面板中的第一液晶显示面板包括第一源驱动器920a,显示面板中的第二液晶显示面板包括第二源驱动器930a,第一柔性电连接器CA1的第二端连接至第一源驱动器920a,第二柔性电连接器CA2的第二端连接至第二源驱动器930a,印刷电路板910的第二接口910b的长度延伸方向平行于第一源驱动器920a的长度延伸方向,印刷电路板910的第四接口910a的长度延伸方向平行于第二源驱动器930a的长度延伸方向。如此,可以进一步降低第一柔性电连接器CA1和第二柔性电连接器CA2发生扭曲或变形的概率,进一步提升显示面板和印刷电路板之间的信号连接的可靠性。这里提到的第一或第二源驱动器(source driver)通常为集成电路芯片的形式,其为显示面板的像素电路提供包括数据信号在内的用于图像显示的信号。在一些实施例中,第一源驱动器920a和第二源驱动器930a 在显示设备的出光面上的正投影可以部分重叠完全重叠。例如,在图1的示例中,显示面板的第一源驱动器和第二源驱动器均被图示为110。
在显示面板为液晶显示面板的情形中,显示设备可包括为显示面板提供背光的背光模组。如图9所示,印刷电路板910位于背光模组940背离显示面板的一侧。相应地,在该实施例中,印刷电路板910与背光模组940之间可存在信号交互以实现对背光模组的供电和发光控制。此时,印刷电路板910可与如图1、图3或图4a所示的印刷电路板类似,印刷电路板包括第五接口和第六接口,第五接口与所述控制器电连接以实现所述印刷电路板与控制器之间的第五信号交互;第六接口与背光模组电连接以实现所述印刷电路板与所述背光模组之间的第六信号交互,从而使得所述显示面板在所述控制器、所述印刷电路板和所述背光模组的控制下进行显示图像。在一些实施例中,第五接口和第六接口经由印刷电路板的内部走线直接连接。
本公开的另一实施例提供了一种图像显示系统,该图像显示系统包括控制器、以及如前述实施例中任一实施例所述的显示设备,控制器至少与印刷电路板的所述第一接口电连接,从而使得所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示。当然,在印刷电路板包括第三接口的情况下,控制器可以与第三接口电连接。该控制器可被配置成经由印刷电路板向所述显示面板提供电源信号和显示面板显示图像所需的控制信号。可以借助图2示意性地说明该图像显示系统的主要组成。图像显示系统包括控制器CON、印刷电路板200以及显示面板100。显示面板100的示例包括但不限于液晶显示面板、有机发光二极管显示面板。在图2中,显示面板100和印刷电路板200之间、以及印刷电路板200和控制器CON之间均设置两个连接装置,但是,在其他实施例中,可以利用单个或更多数量的连接装置实现显示面板100和印刷电路板200之间的信号传输、以及印刷电路板200和控制器CON之间的信号传输。控制器CON的具体形式可随显示面板100的具体应用场景而不同。例如,显示面板100可应用在交通工具的驾驶舱内,此时,控制器CON可以是交通工具的电子控制装置或电子控制系统,该图像显示系统即为车载图像显示系统。显示面板也可以应用于其它任何室内或室外的显示平台。
以上描述了本公开的一些实施例,“第一”、“第二”、“第三”等术语在本文中可以用来描述各种设备、元件、部件或部分,但是这些设备、元件、部件或部分不应当由这些术语限制,仅表示名称方面的区分。此外,本文提到的“电连接”包括“直接连接”或“间接连接”。以上已经结合一些实施例描述了本公开的技术方案,但是本公开的保护范围并不限于在本文中所阐述的实施例的特定形式,本公开的范围由所附权利要求来定义。

Claims (23)

  1. 一种印刷电路板,所述印刷电路板用于驱动显示面板且包括多边形轮廓,所述多边形轮廓包括第一边和第二边,所述第一边的延伸方向和所述第二边的延伸方向相交且不垂直,其中所述印刷电路板包括:
    第一接口,其被配置成与控制器电连接以实现所述印刷电路板与控制器之间的第一信号交互;以及
    第二接口,其被配置成与所述显示面板电连接以实现所述印刷电路板和所述显示面板之间的第二信号交互,从而使得所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示,
    其中所述第一接口的长度延伸方向与所述第一边的延伸方向形成第一夹角,所述第二接口的长度延伸方向与所述第二边的延伸方向形成第二夹角,所述第一夹角和所述第二夹角中的每个不大于20度。
  2. 根据权利要求1所述的印刷电路板,其中所述印刷电路板还包括:
    第三接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第三信号交互;以及
    第四接口,其被配置成与所述显示面板电连接以实现所述印刷电路板和所述显示面板之间的第四信号交互,从而使所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示,
    其中所述第三接口的长度延伸方向与所述第一接口的长度延伸方向一致,所述第四接口的长度延伸方向与所述第二接口的长度延伸方向一致。
  3. 根据权利要求2所述的印刷电路板,其中所述多边形轮廓的所述第一边与所述多边形轮廓的所述第二边相邻。
  4. 根据权利要求3所述的印刷电路板,其中所述第一边的延伸方向和所述第二边的延伸方向相交形成第三夹角,所述第三夹角在70-80度之间。
  5. 根据权利要求3所述的印刷电路板,其中所述第一接口和所述第二接口相互电连接,所述第三接口和所述第四接口相互电连接,所述多边形轮廓包括与所述第一边彼此相对的第三边,其中所述第一接 口和所述第二接口相比于所述第三接口和所述第四接口所述更靠近所述第一边,所述第三接口和所述第四接口相比于所述第一接口和所述第二接口更靠近所述第三边。
  6. 根据权利要求5所述的印刷电路板,其中所述第三边的延伸方向与所述第二边的延伸方向相交形成第五夹角,所述第五夹角小于所述第三夹角。
  7. 根据权利要求2所述的印刷电路板,其中所述多边形轮廓的所述第一边与所述多边形轮廓的第二边彼此相对。
  8. 根据权利要求7所述的印刷电路板,其中所述第一边的延伸方向和所述第二边的延伸方向相交形成第四夹角,所述第四夹角在20-30度之间。
  9. 根据权利要求7所述的印刷电路板,其中所述第一接口的长度延伸方向、第二接口的长度延伸方向、第三接口的长度延伸方向以及第四接口的长度延伸方向中的每个平行于所述第二边的延伸方向。
  10. 根据权利要求7所述的印刷电路板,其中所述第一接口和所述第二接口相互电连接,所述第三接口和所述第四接口相互电连接,其中所述印刷电路板的多边形轮廓还包括:
    第三边,所述第一边的延伸方向和所述第二边的延伸方向中的每个与所述第三边的延伸方向相交,
    与所述第三边相对的第四边,所述第二边的延伸方向和所述第一边的延伸方向中的每个与所述第四边的延伸方向相交,
    其中所述第一接口和所述第二接口相比于所述第三接口和所述第四接口所述更靠近所述第三边,所述第三接口和所述第四接口相比于所述第一接口和所述第二接口更靠近所述第四边。
  11. 根据权利要求2所述的印刷电路板,其中所述印刷电路板还包括:
    第五接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第五信号交互;
    第六接口,其被配置成与背光模组电连接以实现所述印刷电路板与所述背光模组之间的第六信号交互,从而使得所述显示面板在所述控制器、所述印刷电路板和所述背光模组的控制下进行显示图像,
    其中所述第五接口相对于所述第六接口更靠近所述第一边,所述第六接口相对于所述第五接口更靠近所述第二边。
  12. 根据权利要求11所述的印刷电路板,其中所述第五接口的长度延伸方向和所述第一接口的长度延伸方向一致,且所述第五接口的长度延伸方向和所述第二边的延伸方向形成70-80度的夹角,所述第六接口的长度延伸方向和所述第二边的延伸方向形成60-70度的夹角。
  13. 根据权利要求11所述的印刷电路板,其中所述第五接口的长度延伸方向和所述第二边的延伸方向形成10-20度的夹角,所述第六接口的长度延伸方向和所述第二边的延伸方向形成60-70度的夹角。
  14. 根据权利要求1所述的印刷电路板,其中所述第一夹角和所述第二夹角中的每个为0度,使得所述第一接口的长度延伸方向平行于所述多边形轮廓的所述第一边的延伸方向,所述第二接口的长度延伸方向平行于所述多边形轮廓的所述第二边的延伸方向。
  15. 根据权利要求2所述的印刷电路板,其中所述多边形轮廓包括六边形,所述第一边和所述第二边为所述六边形中相邻的两边或者彼此相对的两边。
  16. 根据权利要求15所述的印刷电路板,其中所述第一接口、第二接口、第三接口和第四接口位于所述印刷电路板的印刷电路板本体的第一侧,所述印刷电路板还包括位于所述印刷电路板本体的所述第一侧上的电气元件,所述电气元件包括集成电路芯片、电阻器和电容器中的至少一个,所述第一接口、第二接口、第三接口和第四接口中的每个在所述第一侧上的高度是所述电气元件在所述第一侧上的高度的2至15倍。
  17. 根据权利要求15所述的印刷电路板,其中所述印刷电路板本体的所述第一侧包括位于所述第一接口、所述第二接口、所述第三接口和所述第四接口中的任何一个和所述电气元件之间的无元件区域,其中所述无元件区域的直径大于等于1.5mm。
  18. 一种显示设备,包括:
    如权利要求1所述的印刷电路板;
    第一柔性电连接器;
    以及显示面板,
    其中所述第一柔性电连接器的第一端与所述印刷电路板的所述第二接口连接,所述第一柔性电连接器的第二端连接至所述显示面板。
  19. 一种显示设备,包括:
    如权利要求2-17中任一项所述的印刷电路板;
    第一柔性电连接器;
    第二柔性电连接器,
    以及显示面板,
    其中所述显示面板包括沿着所述显示设备的出光方向依次设置的第一液晶显示面板和第二液晶显示面板,
    其中所述第一柔性电连接器的第一端与所述印刷电路板的所述第二接口连接,所述第一柔性电连接器的第二端连接至所述第一液晶显示面板;
    所述第二柔性电连接器的第一端与所述印刷电路板的第四接口连接,所述第二柔性电连接器的第二端连接至所述第二液晶显示面板。
  20. 根据权利要求19所述的显示设备,其中所述第一液晶显示面板包括第一源驱动器,所述第二液晶显示面板包括第二源驱动器,其中所述第一柔性电连接器的第二端连接至所述第一源驱动器,所述第二柔性电连接器的第二端连接至所述第二源驱动器,
    其中所述第二接口的长度延伸方向平行于所述第一源驱动器的长度延伸方向,所述第四接口的长度延伸方向平行于所述第二源驱动器的长度延伸方向。
  21. 根据权利要求18或19所述的显示设备,其中所述显示设备包括为所述显示面板提供背光的背光模组,所述印刷电路板位于所述背光模组背离所述显示面板的一侧。
  22. 根据权利要求21所述的显示设备,其中所述印刷电路板还包括:
    第五接口,其被配置成与所述控制器电连接以实现所述印刷电路板与控制器之间的第五信号交互;
    第六接口,其被配置成与背光模组电连接以实现所述印刷电路板与所述背光模组之间的第六信号交互,从而使得所述显示面板在所述控制器、所述印刷电路板和所述背光模组的控制下进行显示图像。
  23. 一种图像显示系统,包括:
    控制器;以及
    如权利要求18-22中任一项所述的显示设备,
    其中所述控制器至少与所述印刷电路板的所述第一接口电连接,从而使得所述显示面板在所述控制器和所述印刷电路板的控制下进行图像显示。
PCT/CN2022/108242 2022-07-27 2022-07-27 印刷电路板、包括该印刷电路板的显示设备和图像显示系统 WO2024020855A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002221704A (ja) * 2001-01-25 2002-08-09 Hitachi Ltd 液晶表示装置
CN101043770A (zh) * 2006-03-20 2007-09-26 三星电子株式会社 显示装置及其制造方法
CN101101398A (zh) * 2004-10-18 2008-01-09 财团法人工业技术研究院 一种非矩形显示器的制作方法
CN109658898A (zh) * 2019-02-27 2019-04-19 惠科股份有限公司 防止读取数据出错的电路、方法及显示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002221704A (ja) * 2001-01-25 2002-08-09 Hitachi Ltd 液晶表示装置
CN101101398A (zh) * 2004-10-18 2008-01-09 财团法人工业技术研究院 一种非矩形显示器的制作方法
CN101043770A (zh) * 2006-03-20 2007-09-26 三星电子株式会社 显示装置及其制造方法
CN109658898A (zh) * 2019-02-27 2019-04-19 惠科股份有限公司 防止读取数据出错的电路、方法及显示装置

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