WO2013139202A1

WO2013139202A1 - Blanked frame display device

Info

Publication number: WO2013139202A1
Application number: PCT/CN2013/072126
Authority: WO
Inventors: 曹嘉灿
Original assignee: Cao Jiacan
Priority date: 2012-03-22
Filing date: 2013-03-04
Publication date: 2013-09-26
Also published as: CN103325310A; CN103325310B

Abstract

A blanked frame display device, comprising a display screen (1) and an optical member (2) for the blanked frame; the optical member comprises a middle portion and an edge portion (22); the upper surface of the edge portion is a convex curved surface (221) having a shorter distance between a position close to the frame and the image display surface (11) of the display screen, and a longer distance between a position farther from the frame and the image display surface (11) of the display screen; and the lower surface is a concave curved surface (222) having a shorter distance between a position close to the frame and the image display surface (11) of the display screen, and a longer distance between a position farther from the frame and the image display surface (11) of the display screen. By adopting the optical member, the line of sight of a viewer looking at the frame is directed to the display area after passing through the optical member (2), thus enabling the viewer to view an image with no frame, and even to hide the frame in large-angle viewing.

Description

Blanking frame display device

Technical field

The present invention relates to the field of display, and more particularly to a blanking frame display device.

Background technique

Today, the demand for a variety of large screen displays is increasing, and splicing display is a major way to achieve large screen display. However, due to the use of the splicing display, the display screen "frame" of each single-screen display as a splicing unit makes the formed large-sized spliced display have a split seam for the overall image, which seriously affects the spliced display. The overall effect of the picture is more serious in the "slab splicing" scheme using a liquid crystal or plasma display as a splicing unit. In addition, when it is used as a typical single-screen display application such as a liquid crystal or a plasma television, in order to pursue the fashion sense of appearance, a clear development trend is the so-called "narrow bezel" and "ultra-narrow bezel" design. If the display frame can be completely eliminated by technical means, it is of great significance for the large-screen splicing display or the realization of the frameless single-screen display.

Due to the limitations of the display technology principle and the manufacturing process, the display screen has a certain width of the frame that does not emit light (that is, the image cannot be displayed). When the display with the frame is directly used as the splicing display unit, The borders of the adjacent unit display screens are directly combined to form a "stitching seam" that seriously affects the mosaic display effect.

The application number CN200910104850.5 discloses an optical structure capable of eliminating seams, and can make the viewing line of view which should fall at the seam be refracted and reflected by the optical structure and fall into the image display area within a certain viewing angle range, thereby To realize the blanking of the seam by the optical method, when the viewing angle of the display device using the optical structure is large, the viewing line of sight is refracted and reflected, and the normal angle with the lower surface of the optical amplifying plate is greater than the total reflection threshold. The angle, so that part of the viewing line of sight cannot fall into the image display area due to total reflection, resulting in viewing shadows, that is, the effective viewing range of such a display device at the time of splicing display is narrowed.

Summary of the invention

It is an object of the present invention to provide a display device for blanking a bezel, which can provide a blanking frame display effect with a wide viewing angle when splicing.

The technical solution adopted by the present invention is: constructing a blanking frame display device, comprising a display screen with a frame and an optical member for blanking the frame. The optical member is made of a transparent material and covers the display screen and has a size greater than or equal to the display screen.

The display consists of an image display surface and a bezel. The transparent member is used to construct an optical member that covers the display and has a size greater than or equal to the external dimensions of the display. The optical member comprises an intermediate portion and an edge portion adjacent to and surrounding the intermediate portion along the edge, the edge portion and the intermediate portion being a unitary structure, the upper surface of the edge portion being closer to the frame than the display image display surface, away from the frame The convex surface of the frame is far away from the display image display surface, and the lower surface is also close to the border of the display image display surface, and is away from the concave surface of the display surface which is far away from the display image display surface. The viewer sees the line of sight at the border offset to the display area via the optical member, allowing it to view an image without a border.

The blanking frame display device of the present invention, wherein the orthographic projection of the convex curved surface of the optical member on the display screen is greater than or equal to the outer edge of the display screen, and the orthographic projection of the concave curved surface of the optical member on the display screen is less than or equal to the outer edge of the image display surface .

In the blanking frame display device of the present invention, the end surface of the optical member is a reflecting surface or a total reflecting surface.

In the blanking frame display device of the present invention, the end surface of the optical member is a flat surface.

In the blanking frame display device of the present invention, the end surface of the optical member is a curved surface.

In the blanking frame display device of the present invention, the intermediate portion of the optical member has a thickness smaller than that of the edge portion.

The blanking frame display device of the present invention further includes a wedge member for fixing the connecting optical member and the display screen. At least one surface of the wedge member is matched with an end surface of the optical member, at least one surface is matched with a side surface of the display screen, a surface matching the end surface of the optical member is a reflective surface, and a surface matching the end surface of the optical member is transparently bonded to the side of the display screen The mating faces are bonded or mechanically joined.

In the blanking frame display device of the present invention, the optical member is fixed with a transparent adhesive film or a transparent adhesive sheet, and the transparent adhesive film or the transparent adhesive sheet is transparently bonded to the upper surface of the optical member, and the transparent adhesive film or The transparent adhesive sheet is bonded or mechanically connected to the side of the display.

The blanking frame display device of the present invention comprises a wedge member fixed to the display screen by a wedge member and a transparent adhesive film or a transparent adhesive sheet, wherein one face of the wedge member matches the end face of the optical member, at least one face and The sides of the display are matched, and the surface matching the end face of the optical member is transparently bonded or air-retained, and the surface matching the side of the display screen is bonded or mechanically bonded, and the transparent adhesive film or transparent adhesive sheet and the upper surface of the optical member are used. Transparent bonding, transparent adhesive film or transparent adhesive sheet is bonded or mechanically connected to the side of the display screen.

The blanking frame display device of the present invention comprises a wedge member fixed to the display screen by a wedge member and a high-strength adhesive tape or an adhesive sheet, wherein one face of the wedge member matches the end face of the optical member, and the end face of the optical member Transparent bonding, at least one surface is connected to the side of the display screen by a high-strength adhesive tape or adhesive sheet, and the high-strength adhesive tape or adhesive sheet is bonded to the surface of the wedge member, and the high-strength adhesive tape or adhesive sheet Bonded or mechanically attached to the side of the display.

The blanking frame display device of the present invention comprises a wedge member, and the optical member is fixed to the display screen by a wedge member and a high-strength adhesive tape or adhesive sheet, a transparent adhesive film or a transparent adhesive sheet, wherein one side of the wedge member The end face of the optical member is matched, transparently bonded to the end surface of the optical member or the air rest is maintained, and at least one surface is connected to the side surface of the display screen through a high-strength adhesive tape or adhesive sheet, and the high-strength adhesive tape or the adhesive sheet and the wedge member are The surface bonding, the high-strength adhesive tape or the adhesive sheet is bonded or mechanically connected to the side of the display screen; the transparent adhesive film or the transparent adhesive sheet is transparently bonded to the upper surface of the optical member, the transparent adhesive film or the transparent adhesive The tabs are bonded or mechanically bonded to the outer surface of the high strength adhesive strip or adhesive sheet on the side of the display.

The blanking frame display device of the present invention has the beneficial effects that when the plurality of display screens are spliced and displayed, the optical member causes the viewer to view the line of sight at the frame to be offset to the display area, so that a frame is not displayed. Image. The frame can still be hidden when viewed from a large angle; when an image is displayed on a single display, the optical component extends the image to the entire display, providing a display interface for blanking the border.

DRAWINGS

The invention will now be described with reference to the accompanying drawings.

Figure 1.a shows the existing display;

Figure 1.b is a partial enlarged view of the existing display screen;

Figure 2.a is a seamless splicing display device of the prior art;

Figure 2.b is a partial enlarged view of a prior art seamless mosaic display device;

3 is a schematic view of a prior art seamless splicing display device viewed from a large angle of view;

Figure 4 is a schematic view showing a first embodiment of a blanking frame display device of the present invention;

Figure 4b is an enlarged view of an edge portion of the first embodiment of the blanking frame display device of the present invention;

FIG. 5 is a partial schematic view showing the first embodiment of the blanking frame display device of the present invention when viewed from a large angle;

6 is a schematic view showing a second embodiment of a blanking frame display device according to the present invention;

Figure 7 is a schematic view showing a third embodiment of the blanking frame display device of the present invention;

FIG. 8 is a schematic diagram of a fourth embodiment of a blanking frame display device according to the present invention; FIG.

9 is a schematic view showing a fifth embodiment of a blanking frame display device according to the present invention;

10 is a schematic view showing a sixth embodiment of a blanking frame display device according to the present invention;

11 is a schematic view showing a seventh embodiment of a blanking frame display device according to the present invention;

12 is a schematic view showing an eighth embodiment of a blanking frame display device of the present invention;

FIG. 13 is a schematic diagram of a ninth embodiment of a blanking frame display device according to the present invention.

detailed description

The invention will be described in detail below with reference to specific embodiments and drawings.

First, the existing display structure of Fig. 1.a and Fig. 1.b and the existing seamless splicing scheme of Fig. 2.a, Fig. 2.b and Fig. 3 will be described.

Figure 1.a and Figure 1.b show a partial enlarged view of the structure of the existing display screen and its frame. Due to limitations of display technology principles and manufacturing processes, the display screen has a certain width of the frame 12 that does not emit light (ie, cannot display images). When displayed on a single display screen, these frames 12 only reduce the appearance of the display. The fashion sense of the shape does not damage the integrity of the image, but when the multi-display synergistic display is performed, these frames will seriously affect the display effect when splicing.

In order to solve the above problems, the application number CN200910104850.5 discloses an optical structure which can eliminate the seam, as shown in Fig. 2.a, Fig. 2.b and Fig. 3. As shown in Fig. 2.a and Fig. 2.b, the viewing line of sight 61 which should fall at the seam 13 can be refracted and reflected by the optical structure and fall into the image display surface 11 within a certain viewing angle range, thereby realizing utilization. Optical method for blanking of seams. The specific method is: adding an optical amplifying plate 7 directly above the display screen 1. The optical amplifying plate 7 is a transparent optical member having a thinner edge thickness than the central portion, and a wedge-shaped member having a reflecting surface 8 on the side is added at the joint. . Such a structure enables the image of the image display surface 11 near the edge to be refracted by the optical member, so that the human eye 6 can view the images of the two display screens that are successively spliced at the position where the seam 13 should be viewed.

With the optical member of the structure of Fig. 2.a, when the large viewing angle is displayed, there is a case where the full emission effect of the lower surface of the optical amplifying plate cannot be viewed. As shown in FIG. 3, when the viewing angle is large, the viewing line of sight 61 is refracted so that its angle with the optical amplifying plate 7 is greater than the total reflection critical angle, so that part of the viewing line of view cannot fall into the image due to total reflection. The display area produces viewing shadows, that is to say, the disadvantage of the technique of eliminating the seams is that the effective viewing range of the image is narrowed.

In order to overcome the drawback that existing optical components cannot be viewed at large angles, the present invention constructs a blanking bezel display device as shown in Figures 4.a and 4.b. The blanking bezel display device includes a display screen 1 with a bezel 12 and an optical member 2 for blanking the bezel of the display screen.

In the optical member of the present invention, the edge portion 22 includes a convex curved surface 221, a concave curved surface 222, and an end surface 223. The convex curved surface 221 and the concave curved surface 222 are bent toward the frame 12 at a position close to the edge of the optical member, and the convex curved surface 221 and the concave curved surface 222 are closer to the display image display surface 11 near the frame, away from the frame and the display screen. The image display surface 11 is a far surface from the surface.

The orthographic projection of the convex curved surface 221 on the image display plane is greater than or equal to the outer edge of the display screen size, and the orthographic projection of the concave curved surface 222 on the image display plane is less than or equal to the outer edge of the image display surface.

The end surface 223 of the optical member is a flat surface or a curved surface, and is optically reflective or totally reflective.

When the optical member thus structured is viewed from the vertical image display surface 11 of the line of sight 61 or viewed at a small angle, due to the refraction of the convex curved surface 221 and the concave curved surface 222, the viewer views the line of sight at the frame 12 via the optical member and then shifts to the display. Area to view an image without a border. After viewing the line of sight from the upper surface of the optical member into the optically dense medium (transparent material), it refracts, tilts away from the frame of the display screen, and then enters the light-dissipating medium (air) from the lower surface and refracts again, tilting toward the frame. Through the reasonable setting of the parameters, the direction of the line of sight after two refractions is probably not changed, but the path of the line of sight is shifted away from the direction of the display frame, so that the line of sight that should have fallen on the frame of the display falls on the image display. On the face 11, the optical blanking of the display frame is achieved.

When the viewing line of sight is severely inclined, as shown in FIG. 5, the viewing line of sight which is refracted into the optically dense medium (transparent material) through the upper surface of the optical member 2 can be emitted to the light-off angle at a normal angle of the lower surface smaller than the critical angle of total reflection. In the medium (air), that is, the angle 2222 between the viewing line of sight and the concave surface normal 2221 is smaller than the total reflection angle, total reflection does not occur, so that the viewing line of sight can smoothly fall on the image display surface 11 and still be good. The blanking border image enables a large viewing range for the display image to be obtained.

As shown in FIG. 6, in the second embodiment of the present invention, the end surface 223 of the optical member of the present embodiment is an inclined plane, and the inclined plane completely covers the frame 12 of the display screen, and is refracted through the upper surface of the optical member. The viewing line 61 that is incident on the frame 12 can be totally reflected on the inclined surface, so that the viewing line of sight still falls into the image display surface 11, so that the frame of the display screen is not visible at any viewing position, that is, any viewing position is realized. The border is blanked.

7 is a third embodiment of the present invention, in which the end surface 223 of the optical member is an inclined curved surface, and the end surface 223 of the optical member is curved, so that the line-of-sight coverage area 111 that falls after being reflected into the image display surface can be made smaller than when the plane is used. Thus, local image distortion of the viewed image can be reduced.

Figure 8 is a fourth embodiment of the present invention. In order to satisfy the necessary optical characteristics, the edge portion 22 of the optical member of this embodiment is a thicker region 201, but the thickness of the intermediate portion 21 is designed to be smaller than the thickness of the edge portion 22. The small area 203, on the lower surface of the optical member, adopts a gentle transition design between the different thicknesses of the two portions, and is a gentle transition region 202. With the design of the embodiment, the optical characteristics required for the optical member can be ensured. Under the premise, the weight of the optical member is greatly reduced, which can reduce the material cost of the optical member and make the optical member easy to mount and fix.

Figure 9 is a fifth embodiment of the present invention, the optical member is fixed to the display screen 1 by the wedge member 3, wherein the slope of the wedge member 3 is fitted to the end surface 223 of the optical member, and the wedge member 3 extends a sheet to the side of the display screen. The inner side surface is attached to the side surface of the display screen, and the inclined surface that is bonded to the end surface of the optical member is mirror-finished and transparently bonded to the end surface 223 of the optical member to form a transparent bonding surface 31, and the bonding surface of the side surface of the display screen and the inner side of the sheet Bonding or mechanical joining may be used to form the bonding surface 32 or the mechanical joining surface 33. The wedge member 3 is made of a metal material having a good strength and a surface which is not easily oxidized, and preferably stainless steel.

Figure 10 is a sixth embodiment of the present invention, wherein the optical member is fixed to the display screen by a transparent adhesive film 41 or a transparent adhesive sheet 42, a portion of the transparent adhesive film 41 or the transparent adhesive sheet 42 and the upper surface of the optical member. Some or all of them are transparently bonded to form an adhesive surface 32; the other portion is bonded or mechanically joined to the side of the display screen to form an adhesive surface 32 or a mechanical joint surface 33.

Figure 11 is a seventh embodiment of the present invention, in which the optical member is fixed to the display panel 1 by the wedge member 3 and the transparent adhesive film 41 or the transparent adhesive sheet 42, wherein the slope of the wedge member 3 is fitted to the end surface 223 of the optical member, wedge-shaped The member extends a sheet in the direction of the display screen, the inner surface of the sheet is attached to the side of the display screen, and the inclined surface of the end surface 223 of the optical member is transparently bonded or held by air to form a transparent bonding surface 31 or an air gap 34; When the transparent bonding is used, the bevel of the wedge member is processed into a mirror surface, and the material of the wedge member is preferably stainless steel which is not easily oxidized and has good strength. This design can increase the connection strength between the optical member and the wedge member, and maintain the wedge member when the air is resting. The beveled surface is not processed into a mirror surface. This design can reduce the manufacturing cost of the wedge member. A part of the transparent adhesive film 41 or the transparent adhesive sheet 42 is transparently bonded to a part or all of the upper surface of the optical member to form a transparent bonding surface 31. The other part is bonded to the outer surface of the wedge member, and the bonding surface on the side of the display screen and the inner side of the sheet is bonded or mechanically connected. Bonding surface 32 or mechanical connection surface 33.

Figure 12 is an eighth embodiment of the present invention, wherein the optical member is fixed to the display panel by a wedge member 3 and a high-strength adhesive tape or adhesive sheet, wherein one face of the wedge member 3 is fitted to the end face 223 of the optical member, wedge-shaped The surface of the member 3 to which the optical member end surface 223 is bonded is processed into a mirror surface, and is transparently bonded to the end surface 223 of the optical member to form a transparent bonding surface 31. The straight surface of the wedge member 3 perpendicular to the display plane is connected to the side surface of the display screen by a high-strength adhesive tape or an adhesive sheet, and a portion of the high-strength adhesive tape 51 or the adhesive sheet 52 is bonded to the surface of the wedge member 3 to form a paste. The junction 32 is bonded or mechanically joined to the side of the display to form an adhesive surface 32 or a mechanical attachment surface 33. In this embodiment, since the optical member and the display screen adopt a "soft" connection, when dimensional errors occur due to thermal expansion and contraction of the optical member due to temperature change, the optical member 2, the wedge member 3, and the display are not displayed. A matching error occurs between the screens 1 to cause debonding and tearing of the bonding surface, thereby affecting optical performance and reliability, and ensuring reliable use of the product over a wide temperature range.

Figure 13 is a ninth embodiment of the present invention. The difference between this embodiment and the previous embodiment is that a transparent adhesive film 41 or a transparent adhesive sheet 42 is further added to the optical member 2 and the display based on the previous embodiment. The screen 1 is used to increase the connection strength between the optical member and the display screen. With the embodiment, the air member can be kept between the wedge member 3 and the end surface 223 of the optical member without bonding. In this way, the wedge member 3 and the optical member are used. The fitting portion of the end surface 223 is also not processed into a mirror surface, thereby simplifying the manufacturing process and cost. A part of the transparent adhesive film 41 or the transparent adhesive sheet 42 is transparently bonded to the upper surface of the optical member to form the adhesive surface 32, and the other portion is outside the high-strength adhesive tape 51 or the adhesive sheet 52 on the side surface of the display screen. The surface is bonded or mechanically joined to form an adhesive surface 32 or a mechanical joint surface 33.

The above are only the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereto. Any changes made by those skilled in the art based on the present invention, as well as those well known to those skilled in the art, should still be Scope covered by the present invention .

Claims

A blanking frame display device comprising a display screen (1) with a bezel, wherein the blanking frame display device further comprises an optical member (2) for blanking the frame, the optical member (2) Covering the surface of the display screen (1), the optical member comprises an intermediate portion (21) and an edge portion (22) adjacent to and surrounding the intermediate portion (21) along an edge; the intermediate portion (21) And the edge portion (22) is a unitary structure; the edge portion (22) includes a convex curved surface (221) of the upper surface, a concave curved surface (222) of the lower surface, and an end surface (223) for the edge portion (22) Having the viewer view the line of sight at the bezel is offset to the display area via the optical member, causing the viewer to view an image without a bezel.
The blanking frame display device according to claim 1, wherein the orthographic projection of the convex curved surface (221) of the optical member on the display screen is greater than or equal to the outer edge of the display screen (1), the optical member The orthographic projection of the concave curved surface (222) on the display screen is less than or equal to the outer edge of the image display surface (11).
The blanking frame display device according to claim 1, wherein the end surface (223) of the optical member is a reflecting surface or a total reflection surface.
The blanking frame display device according to claim 1, wherein the end surface (223) of the optical member is a flat surface or a curved surface.
A blanking frame display device according to claim 1, wherein the intermediate portion (21) of the optical member has a thickness smaller than the edge portion (22).
A blanking frame display device according to any one of claims 1 to 5, wherein the blanking frame display device comprises a wedge member (3) for fixedly connecting the optical member (2) and the display a screen (1); at least one surface of the wedge member (3) is matched with an end surface (223) of the optical member, at least one surface is matched with a side surface of the display screen, and a surface matching the end surface (223) of the optical member is a reflection surface. The face that matches the end face (223) of the optical member is transparently bonded, and the face that matches the side of the display is bonded or mechanically joined.
The blanking frame display device according to any one of claims 1 to 5, characterized in that the optical member (2) and the display screen (1) pass through the transparent adhesive film (41) or the transparent adhesive sheet (42). The transparent adhesive film (41) or the transparent adhesive sheet (42) is transparently bonded to the upper surface of the optical member, and the transparent adhesive film (41) or the transparent adhesive sheet (42) and the display screen are fixedly connected. Side bonding or mechanical connection.
A blanking frame display device according to any one of claims 1 to 5, wherein the blanking frame display device comprises a wedge member (3), the optical member passing through the wedge member (3) and the transparent adhesive film (41) or a transparent adhesive sheet (42) fixed to the display screen (1), at least one face of the wedge member (3) mating with an end surface (223) of the optical member, the wedge member (3) At least one surface is matched to the side of the display screen, and the surface matching the end surface of the optical member (223) is transparently bonded or air-retained, and the surface matching the side of the display screen is bonded or mechanically bonded, and the transparent adhesive film (41) or The transparent adhesive sheet (42) is transparently bonded to the upper surface of the optical member, and the transparent adhesive film (41) or the transparent adhesive sheet (42) is bonded or mechanically connected to the side surface of the display.
The blanking frame display device according to any one of claims 1 to 5, wherein the blanking frame display device comprises a wedge member (3), and the optical member is bonded to the high strength by the wedge member (3) The belt (51) or the adhesive sheet (52) is fixed to the display screen, at least one face of the wedge member (3) is matched with the end surface (223) of the optical member, and is transparently bonded to the end surface of the optical member, the wedge member ( 3) at least one face is connected to the side of the display screen by a high-strength adhesive tape (51) or an adhesive sheet (52), and the high-strength adhesive tape (51) or the adhesive sheet (52) and the wedge member (3) The surface bonding, high-strength adhesive tape (51) or adhesive sheet (52) is bonded or mechanically bonded to the side of the display.
The blanking frame display device according to any one of claims 1 to 5, wherein the blanking frame display device comprises a wedge member (3), and the optical member is bonded to the high strength by the wedge member (3) The belt (51) or the adhesive sheet (52) is fixed to the display screen, at least one face of the wedge member (3) is matched with the end surface (223) of the optical member, and is transparently bonded to the end surface of the optical member, the wedge member ( 3) at least one face is connected to the side of the display screen by a high-strength adhesive tape (51) or an adhesive sheet (52), and the high-strength adhesive tape (51) or the adhesive sheet (52) and the wedge member (3) The surface bonding, high-strength adhesive tape (51) or adhesive sheet (52) is bonded or mechanically bonded to the side of the display.