WO2020015705A1

WO2020015705A1 - Backplane structure of display screen and interactive intelligent panel

Info

Publication number: WO2020015705A1
Application number: PCT/CN2019/096544
Authority: WO
Inventors: 张宗韬; 魏洋洋; 宋高博
Original assignee: 广州视源电子科技股份有限公司; 广州视睿电子科技有限公司
Priority date: 2018-07-18
Filing date: 2019-07-18
Publication date: 2020-01-23
Also published as: CN109062330A

Abstract

Provided are a backplane structure of a display screen and an interactive intelligent panel. The backplane structure of the display screen comprises a backplane (10) and a rear shell (20), wherein the backplane (10) comprises a first wall (110), a connecting wall (120) and a second wall (130), with one end of the connecting wall (120) being connected to the first wall (110), and the other end of the connecting wall (120) being connected to the second wall (130); the first wall (110), the connecting wall (120) and the second wall (130) form a step shape, and the plane where the first wall (110) is positioned is higher than the plane where the second wall (130) is positioned; and the rear shell (20) is provided on an outer side of the second wall (130) in a covering manner, and the rear shell (20) is flush with the first wall (110). The backplane structure solves the technical problems in related technology of poor integrality and appearance of the display screen that are caused by the rear shell (20) protruding outwards.

Description

Back panel structure of display screen and interactive intelligent tablet

This application claims the priority of a Chinese patent application filed on July 18, 2018 with the Chinese Patent Office, application number 201810791000.6, and application name "Back Panel Structure of Display Screen and Interactive Smart Tablet", the entire contents of which are incorporated herein by reference. Applying.

Technical field

The invention relates to a smart tablet technology, in particular to a back panel structure of a display screen and an interactive smart tablet.

Background technique

The back of the general display screen is provided with a back plate and a back case. The main board, power supply board and other boards are fixed on the outside of the back board. The back shell that shields the board is protruded from the back of the back board. The back shell is like a small schoolbag, which is unattractive and affects the integrity of the display screen. If you design a whole back shell at the back of the back plate, you need to completely cover the back plate, which costs more.

Summary of the invention

Based on this, at least part of the embodiments of the present invention provide a back panel structure of a display screen and an interactive smart tablet to solve the technical problems of poor display integrity and aesthetics caused by the convexity of the rear case in the related art.

According to an aspect of one embodiment of the present invention, a backplane structure for a display screen is provided, which includes a backplane and a rear shell. The backplane includes a first wall, a connection wall, and a second wall. One end of the connection wall is connected to the first wall. The wall is connected. The other end of the connecting wall is connected to the second wall. The first wall, the connecting wall, and the second wall form a step shape. The plane where the first wall is located is higher than the plane where the second wall is located. The two walls are outside, and the rear shell is flush with the first wall.

In the back panel structure of the display screen, the back panel is provided with a first wall and a second wall having a height difference, and the rear shell is disposed outside the second wall and the rear shell is flush with the first wall. One wall is on the same plane or is basically located on the same plane, avoiding the convexity of the rear shell, making the whole machine thinner, more beautiful in appearance, and better in integrity, and does not need to increase the area of the rear shell, and the cost is lower .

Optionally, the back panel structure of the display screen further includes a first backlight and a second backlight. The first backlight is disposed inside the first wall, and the second backlight is disposed inside the second wall.

Optionally, the OD value of the first backlight is greater than the OD value of the second backlight.

Optionally, the OD value of the first backlight is greater than that of the second backlight by 15 mm to 25 mm.

Optionally, the OD value of the first backlight is 28 mm to 40 mm, and the OD value of the second backlight is 8 m to 20 mm.

Optionally, the first backlight is a refractive lamp.

Optionally, the second backlight is a reflective lamp.

Optionally, the planes where the first wall and the second wall are located are parallel to each other, and a distance between the first wall and the second wall is 15 mm to 25 mm.

Optionally, a board and card assembly is provided in a receiving cavity surrounded by the second wall and the rear shell, and the board and card assembly is fixed on the second wall.

Optionally, the rear shell includes a cover plate and a cover plate, one edge of the cover plate is connected to the first wall, the other edges of the cover plate are connected to one end of the cover plate, and the other end of the cover plate is in a direction close to the second wall. Extends and connects to the backplane.

Optionally, the first wall is disposed above the back plate, and the second wall is disposed below the back plate.

Optionally, the back plate is a flat plate, a curved back plate, or a back plate with a uniform slope.

Optionally, the first backlight and the second backlight are bar lights, and both of them are multiple.

According to an aspect of one embodiment of the present invention, an interactive smart tablet is provided, which includes a screen assembly and a backplane structure of the above display screen. The backplane is disposed on the back of the screen assembly, and the distance between the first wall and the screen assembly is greater than The distance of the second wall from the screen assembly.

The back plate of the interactive smart tablet is provided with a first wall and a second wall having a height difference. The rear shell is disposed outside the second wall and the rear shell is flush with the first wall. On the same plane or basically on the same plane, the convexity of the rear shell is avoided, the appearance is more beautiful, and the integrity is better, and the area of the rear shell does not need to be increased, and the cost is lower. Compared with the traditional interactive intelligent tablet, the interactive intelligent tablet is thinner and smaller, and achieves the purpose of lightness and thinness.

Optionally, the interactive smart tablet further includes a side plate disposed around the back plate, one end of the side plate is connected to the back plate, and the other end is connected to the screen assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a back panel structure of a display screen according to a first embodiment of the present invention; FIG.

FIG. 2 is a schematic view of the rear case removed in FIG. 1; FIG.

FIG. 3 is a schematic structural diagram of an interactive smart tablet (without a back shell) provided in Embodiment 1 of the present invention.

Reference sign description:

10. Back plate, 110, first wall, 120, connecting wall, 130, second wall, 20, rear case, 210, cover plate, 220, sealing plate, 30, first backlight, 40, second backlight , 50, motherboard, 60, screen assembly, 70, side panel.

detailed description

To make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

It should be noted that when an element is referred to as "fixed to", "set to" or "mounted on" another element, it may be directly on the other element or a centered element may exist. When an element is considered to be “connected” to another element, it can be directly connected to another element or there may be a centered element at the same time; the specific way of fixedly connecting one element to another element can be achieved by the existing technology. To repeat, it is preferable to adopt a screw connection fixing method.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

The terms “first” and “second” in the present invention do not represent a specific quantity and order, but are only used to distinguish names.

Example one

Referring to FIGS. 1-3, this embodiment provides a backplane structure of a display screen, which includes a backplane 10 and a rear case 20. The backplane 10 includes a first wall 110, a connection wall 120, and a second wall 130. One end is connected to the first wall 110, and the other end of the connection wall 120 is connected to the second wall 130. The first wall 110, the connection wall 120, and the second wall 130 are stepped, and the plane where the first wall 110 is located is higher than the second wall. In a plane where the wall 130 is located, the rear shell 20 is disposed outside the second wall 130, and the rear shell 20 is flush with the first wall 110.

In the back plate structure of the display screen of this embodiment, the back plate 10 is provided with a first wall 110 and a second wall 130 having a height difference, and the rear case 20 is disposed outside the second wall 130 and the rear case 20 and the first wall 110 Flat, when viewed from the side, the rear shell 20 and the first wall 110 are on the same plane or substantially on the same plane (the rear shell 20 is also considered to be flush with the first wall 110 if it is close to the first wall 110), avoiding the rear shell 20 The convexity makes the whole machine thinner, more beautiful in appearance, and better in integrity, and does not need to increase the area of the rear shell 20, and the cost is lower.

Optionally, the back panel structure of the display screen further includes a first backlight 30 and a second backlight 40. The first backlight 30 is disposed inside the first wall 110, and the second backlight 40 is disposed on the second wall 130. Inside, and the OD value of the first backlight 30 is greater than the OD value of the second backlight 40. The screen assembly 60 on the front side of the back plate 10 is illuminated by the first backlight 30 and the second backlight 40 inside the back plate 10, and the OD value of the first backlight 30 is set to be greater than the OD value of the second backlight 40 Even if the OD value of the first backlight 30 far from the screen assembly 60 is large, and the OD value of the second backlight 40 close to the screen assembly 60 is small, the brightness of the screen assembly 60 is uniform. OD is an abbreviation for optical density.

The back plate 10 is used as a basis for installing the backlight and the board assembly in the product. Since the first backlight 30 and the second backlight 40 are used as the light source of the display screen, it needs to be installed on the first of the back plate 10 near the screen assembly 60. Side; the card assembly is assembled to the corresponding second side of the backplane 10. In order to ensure the uniformity of the OD values of the backlight projected to the screen assembly 60, those skilled in the art of the screen assembly 60 usually choose to keep the distance between the backlight and the display screen consistent, so the structure of the back plate 10 is usually a flat plate. In actual production, the screen assembly 60 and the board assembly are generally provided by different suppliers, and then the two are assembled. Technical personnel in the field of board assembly will not face the technology that needs to adjust the distance between the board assembly and the screen assembly 60. problem.

In the traditional direct type backlight design, the back plate is a flat surface, and the OD value in the backlight cavity is the same fixed value. In this embodiment, the backplane is set to two planes with different heights, and the screens of different heights correspond to different backlight OD values of the cases. The mixed OD values are used to achieve the display requirements of the screen components, and the back of the screen components is no longer convex The package forms a whole, and the overall thickness is thinner than the traditional way.

The screen assembly 60 of this embodiment includes a display screen with a display function, or includes a display screen and a touch screen with both touch and display functions.

Specifically, the first backlight 30 in this embodiment is a refractive lamp. The second backlight 40 is a reflective lamp. The use of a refracting lamp and a reflecting lamp is used to ensure that the screen assembly 60 located on the front side of the back plate 10 has a uniform brightness, and avoids local over-brightness and partial dark areas. Further, the first backlight 30 and the second backlight 40 are light bars, and there are multiple bars respectively. The multiple first backlights 30 are evenly arranged on the first wall, and the multiple second backlights 40 are evenly arranged on the first wall. On the second wall.

In order to ensure the uniformity of the OD values, in general, differences in the OD values of the backlights on the same backplane 10 are not allowed in the industry. At the same time, because the processing accuracy is limited, when there is a significant difference in the OD values of the backlights, It is difficult to give a suitable solution to compensate the OD value by setting different backlight positions. The design concept of this embodiment is: the planes where the first wall 110 and the second wall 130 are located are parallel to each other, and the distance between the first wall 110 and the second wall 130 is 15 mm to 25 mm. Specifically, the distance between the first wall 110 and the second wall 130 in this embodiment is 20 mm. The height difference between the first wall 110 and the second wall 130 is limited to the above-mentioned range. The OD value of the first backlight 30 is greater than the OD value of the second backlight 40 by 15 mm to 25 mm. Specifically, the OD value of the first backlight 30 in this embodiment is 20 mm greater than the OD value of the second backlight 40. The OD value of the first backlight is 28 mm to 40 mm, and the OD value of the second backlight is 8 mm to 20 mm. On the one hand, it is adapted to the difference in the OD values of the first backlight 30 and the second backlight 40, so that the brightness of each area of the entire display screen is more uniform, on the other hand, the overall thickness is smaller, and the overall volume is reduced. That is, by setting two sets of backlights with different OD values (that is, the first backlight 30 and the second backlight 40), and setting the two sets of backlights at different distances from the display panel, the compensation result is the OD value of the final light output. Uniform; As an alternative, the number of backlights is not limited to two, and the backplane to which the two backlights are connected is not limited to a flat plate, but can also be a uniform and continuous curved backplane, or a backplane with a uniform slope. board.

Referring to FIG. 1, a board assembly is disposed in an accommodating cavity surrounded by the second wall 130 and the rear case 20, and the board assembly is fixed on the second wall 130. When installing, first fix the board assembly on the second wall 130 which is lower than the first wall 110, and then cover the rear shell 20 outside the second wall 130 so that the board assembly is located in the receiving cavity to isolate the board assembly from the Outside, it is easy to realize functions such as waterproof and moisture proof.

The board component includes one or more of a main board 50, a PC module, a power board, and a touch screen control board. Referring to FIG. 1, in this embodiment, the board assembly includes a motherboard 50. Board components can be configured according to requirements. Further, the back of the second wall 130 is provided with a plurality of copper posts for fixing the card assembly, and the fasteners are fixed on the copper posts through the card assembly using fasteners. The PC module is a hardware module equipped with a Windows system. The touch screen control board may be a capacitive screen control board or an electromagnetic screen control board, an infrared touch screen control board, or an optical touch screen control board.

Referring to FIG. 1, optionally, the rear case 20 includes a cover plate 210 and a cover plate 220. One edge of the cover plate 210 is connected to the first wall 110, and other edges of the cover plate 210 are connected to one end of the cover plate 220. The other end of the plate 220 extends in a direction close to the second wall 130 and is connected to the back plate 10. That is, the rear case 20 has a concave shape with one side opened. The cover plate 210 is provided with a heat dissipation hole for discharging the heat generated by the board assembly out of the accommodating cavity.

Referring to FIG. 3, optionally, in this embodiment, the first wall 110 is disposed above the back plate 10, and the second wall 130 is disposed below the back plate 10. The top and bottom are based on the use of the display, and the end far from the horizontal plane is up, and vice versa. Of course, according to requirements, the relative positions of the first wall 110 and the second wall 130 can be adjusted adaptively. For example, if the second wall 130 is provided in the middle of the first wall 110, that is, the second wall 130 is connected to the first wall 110 through the connecting wall 120 to form a step shape. At this time, the rear case 20 includes a cover plate 210, and the cover 210 It is directly covered outside the second wall 130 and the cover 210 is connected with the first wall 110 around the cover 210 to form a whole.

Example two

1-3, this embodiment provides an interactive smart tablet, which includes a screen assembly 60 and a backplane structure of the display screen of the first embodiment. The backplane 10 is disposed on the back of the screen assembly 60, and the first wall 110 is away from the screen assembly. The distance of 60 is greater than the distance of the second wall 130 from the screen assembly 60.

In the interactive smart tablet of this embodiment, the back plate 10 is provided with a first wall 110 and a second wall 130 having a height difference, and the rear shell 20 is disposed outside the second wall 130 and the rear shell 20 is flush with the first wall 110. When viewed from the side, the rear shell 20 and the first wall 110 are on the same plane or substantially on the same plane (the rear shell 20 is also considered to be flush with the first wall if it is close to the first wall), so that the rear shell 20 is not convex and has an appearance It is more beautiful and more integrated, and does not need to increase the area of the rear shell 20, and the cost is lower. Compared with the traditional interactive intelligent tablet, the interactive intelligent tablet is thinner and smaller, and achieves the purpose of lightness and thinness.

The interactive smart tablet further includes a side plate 70 disposed around the back plate 10. One end of the side plate 70 is connected to the back plate 10 and the other end is connected to the screen assembly 60. The back plate 10 is connected to the screen assembly 60 through the side plate 70 to form a closed inner cavity. The first backlight 30 and the second backlight 40 are arranged inside the back plate 10, that is, the first backlight 30 and the second backlight 40. The light is emitted into the screen assembly 60 to prevent light leakage.

The screen assembly 60 in this embodiment includes a glass cover, a touch film, and a display screen which are arranged in a stack, and has functions of touch and display.

A first backlight 30 and a second backlight 40 are provided inside the back panel 10 of the interactive smart tablet. The first backlight 30 is provided inside the first wall 110 and the second backlight 40 is provided inside the second wall 130. The OD value of the first backlight 30 is greater than the OD value of the second backlight 40. The screen assembly 60 on the front side of the back plate 10 is illuminated by the first backlight 30 and the second backlight 40 inside the back plate 10, and the OD value of the first backlight 30 is set to be greater than the OD value of the second backlight 40 Even if the OD value of the first backlight 30 far from the screen assembly 60 is large, and the OD value of the second backlight 40 close to the screen assembly 60 is small, the brightness of each area of the screen is uniform when the smart tablet is interactively displayed.

The technical features of the above embodiments can be arbitrarily combined. In order to make the description concise, all possible combinations of the technical features in the above embodiments have not been described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be the range described in this specification.

The above embodiments only express several implementation manners of the present invention, and their descriptions are more specific and detailed, but they cannot be understood as a limitation on the scope of the invention patent. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Industrial applicability

The solution provided by the embodiment of the present invention can be applied to a smart terminal device. In the embodiment of the present invention, the back panel structure of the display screen includes a back panel and a back shell. The back panel includes a first wall, a connecting wall, and a second wall. One end of the connecting wall is connected to the first wall, and the other end of the connecting wall is connected to the first wall. The second wall is connected, the first wall, the connecting wall, and the second wall are formed in a step shape, and the plane where the first wall is located is higher than the plane where the second wall is located. The first wall is flush. Since the back plate is provided with a first wall and a second wall having a height difference, the rear shell is disposed outside the second wall and the rear shell is flush with the first wall, so that the rear shell and the first wall are in the same plane when viewed from the side. It is located on the same plane or substantially on the same plane, and solves the technical problem of poor overall and beautiful appearance of the display screen caused by the convexity of the rear case in the related art.

Claims

A back plate structure of a display screen includes a back plate (10) and a back shell (20), the back plate (10) includes a first wall (110), a connecting wall (120), and a second wall (130), One end of the connection wall (120) is connected to the first wall (110), the other end of the connection wall (120) is connected to the second wall (130), and the first wall (110) and the connection wall (120) ) And the second wall (130) form a step shape, and the plane where the first wall (110) is located is higher than the plane where the second wall (130) is located, and the rear shell (20) is covered on the second wall ( 130), and the rear shell (20) is flush with the first wall (110).
The back panel structure of the display screen according to claim 1, further comprising a first backlight (30) and a second backlight (40), the first backlight (30) being disposed on the first wall (110) Inside, the second backlight is disposed inside the second wall (130).
The backplane structure of a display screen according to claim 2, wherein an OD value of the first backlight (30) is greater than an OD value of the second backlight (40).
The back panel structure of a display screen according to claim 2, wherein an OD value of the first backlight (30) is 15 mm to 25 mm greater than an OD value of the second backlight (40).
The back panel structure of the display screen according to claim 2, wherein the OD value of the first backlight (30) is 28 mm to 40 mm, and the OD value of the second backlight (40) is 8 mm to 20 mm.
The back panel structure of a display screen according to claim 2, wherein the first backlight (30) is a refractive type lamp.
The back panel structure of a display screen according to claim 2, wherein the second backlight (40) is a reflective lamp.
The backplane structure of a display screen according to claim 1, wherein the planes where the first wall (110) and the second wall (130) are located are parallel to each other, and wherein the first wall (110) and the The distance between the second walls (130) is 15 mm to 25 mm.
The backplane structure of the display screen according to claim 1, wherein a board card assembly is disposed in a receiving cavity surrounded by the second wall (130) and the rear case (20), and the board card assembly is fixed to the second On the wall (130).
The back plate structure of the display screen according to claim 1, wherein the back shell (20) comprises a cover plate (210) and a cover plate (220), and one edge of the cover plate (210) and the first wall (110) connection, the other edges of the cover plate (210) are connected to one end of the cover plate (220), and the other end of the cover plate (220) extends in a direction close to the second wall (130) and It is connected with the back plate (10).
The back panel structure of the display screen according to claim 1, wherein the first wall (110) is disposed above the back panel (10), and the second wall (130) is disposed below the back panel (10) .
The back plate structure of the display screen according to claim 1, wherein the back plate (10) is a flat plate, a curved back plate or a back plate with a uniform slope.
The back panel structure of the display screen according to claim 2, wherein the first backlight (30) and the second backlight (40) are bar lights, and each of them has a plurality of bars.
An interactive smart tablet, comprising a screen assembly (60) and a backplane structure of a display screen according to any one of claims 1-13, the backplane (10) being disposed on the back of the screen assembly (60), The distance between the first wall (110) and the screen assembly (60) is greater than the distance between the second wall (130) and the screen assembly (60).
The interactive smart tablet according to claim 14, further comprising a side plate (70) disposed around the back plate (10), one end of the side plate (70) is connected to the back plate (10), and the other end is connected to the back plate (10). The screen assembly (60) is connected.