Lamp panel, curved-surface direct display screen, lamp panel manufacturing method and curved-surface direct display screen manufacturing method

Abstract

The invention discloses a lamp panel, a curved surface direct display screen, a lamp panel manufacturing method and a curved surface direct display screen manufacturing method, and belongs to the technical field of display screens, the lamp panel comprises a supporting plate and a Mini-LED flexible lamp strip, the supporting plate is provided with a mounting plate face, and the mounting plate face is provided with a bending area. The curved-surface direct display screen comprises a touch cover plate, a lamp panel, a PCB drive board and a rear cover which are arranged in sequence. The manufacturing method of the lamp panel comprises the steps that the Mini-LED flexible lamp strip is manufactured; manufacturing a supporting plate; and the Mini-LED flexible lamp strip is completely attached to the supporting plate. The manufacturing method of the curved-surface direct display screen comprises the following steps: manufacturing a lamp panel; the lamp panel and the touch cover plate are fully attached to form a display module; a PCB driving board is installed on the supporting board; and the touch cover plate is mounted on the rear cover. In addition, the Mini-LED flexible lamp strip can adapt to the shape of the supporting plate to be bent, so that a display surface with small curvature or large curvature can be manufactured according to needs, particularly, the requirement for large-curvature modeling design is met, main components forming display pixels are low-cost Mini-LED lamps, and the cost advantage is further achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to a light board, a curved direct display screen, a light board manufacturing method, and a curved direct display screen manufacturing method. Background Art

[0002] With the rapid development of automobile intelligence, the intelligence, personalization and high-end feeling of interior decoration have become the target direction of major automobile companies in designing smart cockpits, hoping to create a refreshing and pleasant riding experience for users. The multi-sample and personalization of smart cockpit display have become the goals of major automobile companies. Traditional car display screens are usually flat screens. In order to pursue personalization and technology, create 3D display effects and cooler pictures, car display screens have gradually developed curved display screens. At present, curved display screens are mainly divided into TFT screens (Thin Film Transistor) and OLED screens (Organic Light-Emitting Diode). The former has low cost, but it is impossible to make a display screen with a larger curvature. The design will be limited, so that designers cannot design more display shapes to reflect the sense of technology and high-end. Although the latter can make a display screen with a larger curvature, the cost is very high. Therefore, there is an urgent need for a display screen technology that is low in cost and can meet both large and small curvature designs. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems and to provide a light board, a curved direct display screen, a light board manufacturing method and a curved direct display screen manufacturing method. The light board is composed of a Mini-LED flexible lamp and a support plate. Since the Mini-LED flexible light strip can be bent to adapt to the shape of the mounting surface of the support plate, a display surface with a small curvature or a large curvature can be produced as needed, especially to meet the design requirements of a large curvature. The main components of the display pixels are low-cost Mini-LED lamps. Therefore, it has a cost advantage and can be widely used in various display screens with curved areas to form low-cost direct display screens.

[0004] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention discloses a light board, comprising a support plate and a Mini-LED flexible light strip adopting an RGB color display mode, wherein the support plate has a mounting board surface for the Mini-LED flexible light strip to be fully attached, and the mounting board surface has a curved area.

[0005] Preferably, the Mini-LED flexible light strip comprises a flexible circuit board and a Mini-LED lamp mounted on the flexible circuit board.

[0006] Preferably, the arrangement spacing of the Mini-LED lamps is 0.7 mm.

[0007] The present invention also discloses a curved direct display screen, comprising a touch cover plate, a light board as mentioned above, a PCB driver board and a back cover arranged in sequence, the touch cover plate is fully fitted with the light board, the Mini-LED flexible light strip of the light board faces the touch cover plate, the support plate of the light board faces the PCB driver board, and the PCB driver board is electrically connected to the Mini-LED flexible light strip and the touch cover plate.

[0008] Preferably, the touch cover plate comprises a front cover plate, a color film and a touch film which are sequentially attached, the touch film faces the Mini-LED flexible light strip, the touch film is electrically connected to the PCB driving board, and the front cover plate is a transparent plate.

[0009] Preferably, the transparent plate is a glass plate.

[0010] Preferably, the front cover plate, the color film and the touch film are bonded together by optical glue.

[0011] Preferably, the touch film and the light board are fully bonded together through OCR.

[0012] The invention also discloses a method for manufacturing a light board, comprising the following steps:

[0013] Make Mini-LED flexible light strip with RGB color display mode;

[0014] A support plate is manufactured, and a curved area is manufactured on a mounting plate surface of the support plate;

[0015] The Mini-LED flexible light strip is fully attached to the mounting plate surface of the support plate.

[0016] The present invention also discloses a method for manufacturing a curved direct display screen, comprising the following steps:

[0017] The light board is manufactured by adopting the light board manufacturing method mentioned above;

[0018] The light panel and the touch cover are fully bonded to form a display module, with the Mini-LED flexible light strip facing the touch cover;

[0019] Install a PCB driver board on the support plate, and electrically connect the PCB driver board to the Mini-LED flexible light strip and the touch cover plate;

[0020] The touch cover plate is mounted on the back cover, and the PCB driving board is located between the back cover and the support plate.

[0021] Compared with the prior art, the present invention has achieved the following technical effects:

[0022] The light board in the present invention is composed of a Mini-LED flexible lamp and a support plate. Since the Mini-LED flexible light strip can be bent, it can be bent to adapt to the shape of the mounting surface of the support plate. Therefore, the light board produced can be made into a display surface with a small curvature or a large curvature as needed, and the main component used to form the display pixel is the Mini-LED lamp, and the production cost is relatively low. Therefore, compared with the LCD solution and the TFT solution, especially the design that meets the large curvature, compared with the OLED solution, it has a cost advantage. In general, this light board is a low-cost direct display solution, which can be widely used in various display screens with curved areas, such as vehicle-mounted display screens, bringing diversity to the interior design of the smart cockpit, making the interior more technological and advanced, and creating a cooler, more beautiful and fashionable smart cockpit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 Schematic diagram of the exploded structure of the curved direct display screen in the embodiment;

[0025] Figure 2 is a schematic diagram of the three-dimensional structure of the curved direct display screen in the embodiment;

[0026] Figure 3 is a schematic diagram of the front view structure of the curved direct display screen in the embodiment;

[0027] Figure 4 is a schematic diagram of the side structure of the curved direct display screen in the embodiment;

[0028] Figure 5 This is a Mini-LED display solution diagram of the curved direct display screen in the embodiment;

[0029] Figure 6 This is a partially enlarged view of the Mini-LED display solution of the curved direct display screen in the embodiment.

[0030] Explanation of the accompanying drawings: 1. Front cover; 2. Color film; 3. Touch film; 4. OCR; 5. Mini-LED flexible light strip; 6. Support plate; 7. PCB driver board; 8. Back cover; 9. Screws. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] This embodiment provides a light panel that can be used as a color light source part of a display screen. Figures 1 to 6 As shown, the light board includes a Mini-LED flexible light strip 5 and a support plate 6. The Mini-LED flexible light strip 5 adopts an RGB color display mode. The support plate 6 has a mounting surface, and the mounting surface has a bending area. The size, position and curvature of the bending area are set as required. The Mini-LED flexible light strip 5 is fully attached to the mounting surface of the support plate 6. Because the Mini-LED flexible light strip 5 is flexible and can be bent, the Mini-LED flexible light strip 5 can adapt to the shape of the mounting surface of the support plate 6, that is, the mounting surface of the support plate 6 has a bending area, and the place where the Mini-LED flexible light strip 5 is attached to the bending area is curved, and the support plate 6 has a straight surface area, and the place where the Mini-LED flexible light strip 5 is attached to the straight surface area is flat. Therefore, the light board composed of the Mini-LED flexible light strip 5 and the support plate 6 can make the display surface have a curved area of ​​any curvature, and the main component of the Mini-LED flexible light strip 5 is the Mini-LED lamp, which has a low production cost. Therefore, compared with the LCD solution and the TFT solution, especially the design that meets the large curvature, compared with the OLED solution, it has a cost advantage, and the large curvature display is more technological and advanced, and the display UI is more diverse and personalized. In general, this light board is a low-cost display solution, which can be widely used in various display screens with curved areas, such as car display screens, to diversify the interior design of the smart cockpit; make the interior more technological and advanced, and create a cooler, more beautiful and fashionable smart cockpit.

[0034] Note: RGB color display mode is a color standard in the industry. It obtains various colors by changing the three color channels of red (R), green (G), and blue (B) and superimposing them on each other. RGB represents the colors of the three channels of red, green, and blue. That is, the Mini-LED flexible light strip 5 has Mini-LED lights of red, green, and blue at the same time. The Mini-LED lights of red, green, and blue are arranged according to a preset arrangement scheme, and one red Mini-LED light, one green Mini-LED light, and one blue Mini-LED light form a group as a display pixel;

[0035] LCD, the full name of English is Liquid Crystal Display, and the Chinese name is Liquid Crystal Display;

[0036] TFT, the full English name is Thin Film Transistor, and the Chinese name is Thin Film Transistor;

[0037] OLED, the full English name is Organic Light-Emitting Diode, and its Chinese name is Organic Laser Display.

[0038] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED flexible light strip 5 includes a flexible circuit board and a Mini-LED lamp. The Mini-LED lamp is mounted on the flexible circuit board. The Mini-LED lamp adopts one lamp one driver, that is, each LED lamp is controlled separately. Note: Flexible circuit board, referred to as FPC, is the full name of Flexible Printed Circuit in English.

[0039] In one embodiment, if Figures 1 to 6 As shown in the figure, the pitch of the Mini-LED lamp is 0.7mm, which can make the display clearer. The pitch of 0.7mm is the optimal minimum pitch under the joint constraints of the size of the Mini LED lamp itself and the wiring space, so it is not recommended to make the pitch smaller. Of course, this value is a reference value and can be adjusted according to actual conditions.

[0040] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED lights of the Mini-LED flexible light strip 5 display different colors through different PWM proportions, thereby forming a display interface. Note: PWM, the full name of English is Pulse Width Modulation, and the Chinese abbreviation is pulse width modulation.

[0041] In one embodiment, if Figures 1 to 6 As shown, the size of the light board is 160.0mm*93.0mm*60.0mm. Of course, this size is a reference value and can be adjusted according to actual conditions.

[0042] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED flexible light strip 5 is adhered to the support plate 6 with double-sided adhesive to form a light board. Of course, other installation methods can also be used.

[0043] In one embodiment, if Figures 1 to 6 As shown, the light board displays the program parameters, which are for reference only and can be adjusted according to actual needs and circumstances:

[0044] 1. LED chip: 0408RGB chip;

[0045] 2. Flexible circuit board: flattened size is about 165mm*75mm;

[0046] 3. LED Pitch: about 0.7mm (0.726mm*0.625mm);

[0047] Number of partitions: 36864 PCS (12288 for RGB);

[0048] 4. Driving scheme: one zone one lamp, 12ea column IC + 3ea;

[0049] 5. Luminance:>1000nit.

[0050] Example 2

[0051] This embodiment provides a curved direct display screen, such as Figures 1 to 6 As shown, it includes a touch cover, the light board in Example 1, a PCB driver board 7 and a back cover 8 arranged in sequence. The touch cover is fully fitted with the light board, the Mini-LED flexible light strip 5 of the light board faces the touch cover, and the support plate 6 of the light board faces the PCB driver board 7. The PCB driver board 7 is electrically connected to the Mini-LED flexible light strip 5 and the touch cover. The touch cover and the light board together constitute a display module. This curved direct display screen can be used in various scenarios, such as a car display screen, which has a cooler effect, embellishes the smart cockpit of the car, and creates more ritual and atmosphere. It adopts a Mini direct display method, which is more cost-effective than OLED. While improving the display visual effect, it makes the cost more advantageous and provides more solutions for the diversification of smart cockpit displays. Note: PCB, the full name of which is Printed Circuit Board in English, is called printed circuit board or printed circuit board in Chinese.

[0052] In one embodiment, if Figures 1 to 6 As shown, the touch cover includes a front cover 1, a color film 2 and a touch film 3 which are sequentially attached, the touch film 3 faces the Mini-LED flexible light strip 5, the touch film 3 is electrically connected to the PCB driving board 7, and the front cover 1 is a transparent plate.

[0053] In one embodiment, if Figures 1 to 6 As shown, the transparent plate (front cover plate 1) is a glass plate, which is formed by a hot bending process.

[0054] In one embodiment, if Figures 1 to 6As shown, the front cover 1, the color film 2 and the touch film 3 are bonded together by optical adhesive. The optical adhesive may be OCA. Note: OCA, the full spelling of which is Optically Clear Adhesive, is also known as Optically Clear Adhesive in Chinese.

[0055] In one embodiment, if Figures 1 to 6 As shown, the touch film 3 and the light board are fully bonded through OCR.

[0056] In one embodiment, if Figures 1 to 6 As shown, the PCB driving board 7 and the supporting board 6 are mounted by screws 9 .

[0057] In one embodiment, if Figures 1 to 6 As shown, the rear cover 8 and the support plate 6 are mounted via screws 9 .

[0058] Example 3

[0059] This embodiment provides a method for manufacturing a light board. Figures 1 to 6 As shown, the steps include: making a Mini-LED flexible light strip 5, the Mini-LED flexible light strip 5 has an RGB color display mode; making a support plate 6, making a curved area on the mounting plate surface of the support plate 6, the size, position and curvature of the curved area are made as required; attaching the Mini-LED flexible light strip 5 to the mounting plate surface of the support plate 6. The light board in Example 1 can be made by using this light board manufacturing method.

[0060] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED flexible light strip 5 includes a flexible circuit board and a Mini-LED lamp. The Mini-LED lamp is installed on the flexible circuit board. The Mini-LED lamp adopts one lamp one driver, that is, each LED lamp is controlled separately. Of course, this driving method is only a reference method and can be adjusted according to actual conditions. For example, in order to reduce costs, rotation sacrifices display effects, or two lamps can be driven in one or four lamps can be driven in one.

[0061] In one embodiment, if Figures 1 to 6 As shown in the figure, the pitch of the Mini-LED lamp is 0.7mm, which can make the display clearer. The pitch of 0.7mm is the optimal minimum pitch under the joint constraints of the size of the Mini LED lamp itself and the wiring space, so it is not recommended to make the pitch smaller. Of course, this value is a reference value and can be adjusted according to actual conditions.

[0062] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED lights of the Mini-LED flexible light strip 5 display different colors through different PWM proportions, thereby forming a display interface.

[0063] In one embodiment, if Figures 1 to 6 As shown, the size of the light board is 160.0mm*93.0mm*60.0mm. Of course, this size is a reference value and can be adjusted according to actual conditions.

[0064] In one embodiment, if Figures 1 to 6 As shown, the Mini-LED flexible light strip 5 is adhered to the support plate 6 with double-sided adhesive to form a light board. Of course, other installation methods can also be used.

[0065] Example 4

[0066] This embodiment provides a method for manufacturing a curved direct display screen. Figures 1 to 6 As shown, the following steps are included:

[0067] The light board is manufactured by the light board manufacturing method in Example 3;

[0068] The light board and the touch cover are fully bonded to form a display module, with the Mini-LED flexible light strip 5 facing the touch cover;

[0069] Install the PCB driver board 7 on the support board 6, and electrically connect the PCB driver board 7 to the Mini-LED flexible light strip 5 and the touch cover plate;

[0070] The touch cover plate is installed on the rear cover 8 , and the PCB driving board 7 is located between the rear cover 8 and the supporting plate 6 .

[0071] The curved direct display screen in Example 2 can be manufactured using this curved direct display screen manufacturing method.

[0072] In one embodiment, if Figures 1 to 6 As shown, prepare the front cover plate 1, the color film 2 and the touch film 3, and sequentially bond the front cover plate 1, the color film 2 and the touch film 3 to form a touch cover plate, which can be bonded by optical adhesive. The touch film 3 faces the Mini-LED flexible light strip 5, the touch film 3 is electrically connected to the PCB driver board 7, and the front cover plate 1 is a transparent plate.

[0073] In one embodiment, if Figures 1 to 6 As shown, a glass plate is prepared and a front cover plate 1 is formed by a heat bending process.

[0074] In one embodiment, if Figures 1 to 6 As shown, the touch film 3 and the light board are fully bonded together through OCR to form a display module.

[0075] In one embodiment, if Figures 1 to 6 As shown, the PCB driving board 7 and the supporting board 6 are mounted by screws 9 .

[0076] In one embodiment, if Figures 1 to 6As shown, the rear cover 8 and the front cover plate 1 are mounted via screws 9 .

[0077] Note: The electrical connection in the whole text can be understood as electrical signal connection, remote signal connection, wire connection, etc.

[0078] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A light board, characterized in that: It includes a support plate and a Mini-LED flexible light strip adopting an RGB color display mode, wherein the support plate has a mounting plate surface for the Mini-LED flexible light strip to be fully attached, and the mounting plate surface has a bending area.

2. The light board according to claim 1, characterized in that: The Mini-LED flexible light strip includes a flexible circuit board and a Mini-LED lamp mounted on the flexible circuit board.

3. The light board according to claim 2, characterized in that: The arrangement spacing of the Mini-LED lamps is 0.7 mm.

4. A curved direct display screen, characterized in that: It comprises a touch cover plate, a light board as described in any one of claims 1 to 3, a PCB driver board and a back cover which are arranged in sequence, the touch cover plate is fully fitted with the light board, the Mini-LED flexible light strip of the light board faces the touch cover plate, the support plate of the light board faces the PCB driver board, and the PCB driver board is electrically connected to the Mini-LED flexible light strip and the touch cover plate.

5. The curved direct display screen according to claim 4, characterized in that: The touch cover plate includes a front cover plate, a color film and a touch film which are sequentially attached, the touch film faces the Mini-LED flexible light strip, the touch film is electrically connected to the PCB driving board, and the front cover plate is a transparent plate.

6. The curved direct display screen according to claim 5, characterized in that: The transparent plate is a glass plate.

7. The curved direct display screen according to claim 5, characterized in that: The front cover plate, the color film and the touch film are bonded together by optical glue.

8. The curved direct display screen according to claim 7, characterized in that: The touch film and the light board are fully bonded by OCR.

9. A method for manufacturing a light board, characterized in that: The following steps are involved: Make Mini-LED flexible light strips with RGB color display mode; A support plate is manufactured, and a curved area is manufactured on a mounting plate surface of the support plate; The Mini-LED flexible light strip is fully attached to the mounting plate surface of the support plate.

10. A method for manufacturing a curved direct display screen, characterized in that: The following steps are involved: The light board is manufactured by the light board manufacturing method according to claim 9; The light panel and the touch cover are fully bonded to form a display module, with the Mini-LED flexible light strip facing the touch cover; Install a PCB driver board on the support plate, and electrically connect the PCB driver board to the Mini-LED flexible light strip and the touch cover plate; The touch cover plate is mounted on the back cover, and the PCB driving board is located between the back cover and the support plate.

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