Blanked border display

Abstract

The present invention relates to the technical field of optoelectronic display devices, and specifically discloses a blanking border display, which includes a display screen with a border provided on its periphery, and an optical member covering the display surface of the display screen. The optical member includes a middle portion and an edge portion surrounding and adjacent to the middle portion; the edge portion includes a lower surface cooperating with the display surface, an upper surface facing away from the display surface, and an end surface connecting the lower surface and the upper surface and away from the middle portion. The upper surface includes a first tooth-shaped microprism array with a tooth depth gradually decreasing from the edge portion to the middle portion; the lower surface is a gradually changing concave curved surface with a distance from the upper surface gradually changing from the edge portion to the middle portion, or includes a second tooth-shaped microprism array with a tooth depth gradually changing from the edge portion to the middle portion. The above blanking border display has a simple structure, and the viewing line of sight is completely offset twice through the upper surface and the lower surface and falls entirely within the display surface area of the display screen, facilitating the viewing of a complete borderless image and achieving the visual blanking of the display screen border.

Description

Technical Field

[0001] The present invention relates to the technical field of optoelectronic display devices, and in particular to a blanking frame display. Background Art

[0002] Nowadays, the demand for various ultra-large screen displays is increasing day by day. Limited by the size of a single screen, the current method of splicing multiple screens to achieve ultra-large screen display is mainly adopted. Due to the limitations of display technology principles and production and manufacturing processes, there is a certain width of non-luminous (i.e., cannot display images) border on the display screen. When the display screen with such a border is directly used as a splicing display unit, the borders of adjacent unit display screens on the spliced ​​display are directly spliced ​​to form a splicing seam. Such a splicing seam will affect the overall effect of the final spliced ​​display, making the picture appear segmented. This problem is particularly serious in the "flat panel splicing" solution using LCD or plasma displays as splicing units.

[0003] At present, the seam problem is mainly solved by covering with light pipes and LED display elements. The former is to use light pipes such as optical fibers to form a light pipe amplifier board with image magnification function, but this method has the problem that the image display resolution is limited by the number of light pipes (optical fibers) used in the light pipe amplifier board, and the arrangement of the light pipes must strictly correspond to the pixel arrangement of the display screen, otherwise the magnified image will be disordered. This method has very high requirements on the manufacturing process. Under the condition that the display image resolution is not seriously lost, the production cost is relatively high. The latter (such as the technology disclosed in Patent No. ZL200920069185.6) uses LED display elements to cover the seams, so that the display part of the LED display element corresponds to the content of the edge part of the image, so as to achieve the purpose of eliminating the seams. Since LED display elements and liquid crystal display elements are two completely different display devices, their light-emitting characteristics are extremely different, which makes it difficult for the LED display part and the liquid crystal display part to maintain complete consistency in terms of brightness, color, contrast, etc., making it impossible to completely integrate their display effects. Although the black seams caused by the borders are eliminated, from the overall effect, new and extremely inconsistent color seams are generated that change with the image content, and the effect of border blanking is poor. Summary of the invention

[0004] Based on this, it is necessary to provide a blanking frame display with a simple structure and better blanking effect to address the technical problems of complex manufacturing process, high cost and poor blanking effect of the frame.

[0005] A hidden-edge display includes a display screen with a frame around its periphery, and an optical member covering the display surface of the display screen. The optical member includes a middle portion and an edge portion. The edge portion surrounds the middle portion and is adjacent to the middle portion. The edge portion includes a lower surface that cooperates with the display surface, an upper surface facing away from the display surface, and an end surface connecting the lower surface and the upper surface and away from the middle portion. The upper surface includes a first tooth-shaped microprism array with a tooth depth gradually decreasing from the edge portion to the middle portion. The lower surface is a gradually changing concave curved surface with a spacing from the upper surface gradually changing from the edge portion to the middle portion, or includes a second tooth-shaped microprism array with a tooth depth gradually changing from the edge portion to the middle portion.

[0006] In one embodiment, the end surface is a plane, a curved surface, or a combination of a plane and a curved surface.

[0007] In one embodiment, the end surface is a vertical surface relative to the display surface.

[0008] In one embodiment, the end surface is an inclined surface relative to the display surface, and the positive projection of the inclined surface on the display surface covers the frame of the display screen.

[0009] In one embodiment, the end surface is a reflective surface or a total reflection surface.

[0010] In one embodiment, a wedge-shaped light guide is provided on the inclined surface. At least one surface of the wedge-shaped light guide is a reflective surface, and the remaining surfaces of the wedge-shaped light guide are total reflection surfaces.

[0011] In one embodiment, the upper surface further includes a curved surface structure provided outside the first tooth-shaped microprism array.

[0012] In one embodiment, the lower surface is a single-trend gradually changing concave curved surface, and the spacing between the single-trend gradually changing concave curved surface and the upper surface gradually decreases from the edge portion to the middle portion.

[0013] In one embodiment, the lower surface is a double-trend gradually changing concave curved surface. The spacing between the double-trend gradually changing concave curved surface and the upper surface first gradually decreases and then gradually increases from the edge portion to the middle portion, and gradually tends to connect with the lower surface of the middle portion.

[0014] In one embodiment, the tooth depth of the second tooth-shaped microprism array gradually decreases from the edge portion to the middle portion.

[0015] Implementing the blanking border display of the present invention, by setting a first toothed micro-prism array on the upper surface edge of the optical component and a gradient concave surface or a second toothed micro-prism array on the lower surface of the optical component, the viewing line of the viewer to watch the image undergoes two offsets through the upper surface and the lower surface, and all fall into the display area of the display screen, so as to view a complete borderless image without introducing new seams or redundant color blocks, etc., realizing the efficient visual blanking of the display screen border and improving the quality of the display; the display structure is simple, and during the processing of the display, only the optical component and the display screen need to be simply assembled, avoiding the problem of difficult processing of the display caused by the strict arrangement of optical elements corresponding to the display screen, which is beneficial to reducing the production cost of the display and improving the market competitiveness of the display. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the blanking border display in the first embodiment of the present invention;

[0017] Figure 2 For Figure 1 It is an observation schematic diagram of the blanking border display in the first perspective of the illustrated embodiment;

[0018] Figure 3 For Figure 1 It is an observation schematic diagram of the blanking border display in the second perspective of the illustrated embodiment;

[0019] Figure 4 It is a schematic structural diagram of the blanking border display in the second embodiment of the present invention;

[0020] Figure 5 For Figure 4 It is an observation schematic diagram of the blanking border display in the first perspective of the illustrated embodiment;

[0021] Figure 6 For Figure 4 It is an observation schematic diagram of the blanking border display in the second perspective of the illustrated embodiment;

[0022] Figure 7 It is a schematic structural diagram of the blanking border display in the third embodiment of the present invention;

[0023] Figure 8 For Figure 7 It is a partial enlarged structural schematic diagram of part A in the illustrated embodiment;

[0024] Figure 9 It is a schematic structural diagram of the blanking border display in the fourth embodiment of the present invention;

[0025] Figure 10 For Figure 9 It is a partial enlarged structural schematic diagram of part B in the illustrated embodiment;

[0026] Figure 11 For Figure 9 the schematic diagram of the observation of the bezel - less display in the second viewing angle in the illustrated embodiment;

[0027] Figure 12 the schematic structural diagram of the bezel - less display in the fifth embodiment of the present invention;

[0028] Figure 13 For Figure 12 the enlarged partial structural diagram of part C in the illustrated embodiment;

[0029] Figure 14 the partial structural comparison diagram of the bezel - less display in the second and fifth embodiments of the present invention;

[0030] Figure 15 For Figure 12 the schematic diagram of the observation of the bezel - less display in the second viewing angle in the illustrated embodiment;

[0031] Figure 16 the schematic structural diagram of the bezel - less display in the sixth embodiment of the present invention;

[0032] Figure 17 For Figure 16 the enlarged partial structural diagram of part D in the illustrated embodiment;

[0033] Figure 18 For Figure 16 the schematic diagram of the observation of the bezel - less display in the second viewing angle in the illustrated embodiment;

[0034] Figure 19 the schematic structural diagram of the bezel - less display in the seventh embodiment of the present invention;

[0035] Figure 20 For Figure 19 the enlarged partial structural diagram of part E in the illustrated embodiment;

[0036] Figure 21 For Figure 19 the schematic diagram of the observation of the bezel - less display in the second viewing angle in the illustrated embodiment. Detailed Embodiments

[0037] In order to make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed embodiments of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Please refer to Figures 1 to 21 As shown in the figure, the present invention provides a hidden border display 10 with a simple structure and a good blanking effect. The hidden border display 10 includes a display screen 100 with a border 200 provided at its periphery, and an optical member 300 covering the display surface of the display screen 100. The optical member 300 includes a middle portion 310 and an edge portion 320. The edge portion 320 surrounds the middle portion 310 and is adjacent to the middle portion 310. The edge portion 320 includes a lower surface 321 that cooperates with the display surface, an upper surface 322 facing away from the display surface, and an end surface 323 connecting the lower surface 321 and the upper surface 322 and away from the middle portion 310. The upper surface 322 includes a first tooth-shaped microprism array with a tooth depth gradually decreasing from the edge portion 320 to the middle portion 310. The lower surface 321 is a gradually changing concave curved surface with a spacing from the edge portion 320 to the middle portion 310 gradually changing, or includes a second tooth-shaped microprism array with a tooth depth gradually changing from the edge portion 320 to the middle portion 310.

[0039] When implementing the hidden border display 10 of the present invention, by setting a first tooth-shaped microprism array at the edge of the upper surface 322 of the optical member 300 and setting a gradually changing concave curved surface or a second tooth-shaped microprism array on the lower surface 321 of the optical member 300, the line of sight of the viewer to view the image is offset twice through the upper surface 322 and the lower surface 321, and all fall into the display surface area of the display screen 100, so that a complete borderless 200 image can be viewed, and no new seams or extra color blocks are introduced, realizing the efficient visual blanking of the border 200 of the display screen 100 and improving the quality of the display. The structure of the display is simple. During the processing of the display, only the optical member 300 and the display screen 100 need to be simply assembled, avoiding the problem of difficult processing of the display caused by the strict arrangement of optical elements corresponding to the display screen 100, which is beneficial to reducing the production cost of the display and improving the market competitiveness of the display.

[0040] The structure and working principle of the hidden border display 10 in each embodiment of the present invention will be described below with reference to the accompanying drawings.

[0041] Please refer to Figure 1 , Figure 1The structure of the blanking border display 10 in the first embodiment of the present invention is shown. The blanking border display 10 includes a display screen 100 with a border 200 and an optical member 300 covering the display screen 100. The border 200 is arranged around the edge of the display screen 100 and is not used as a light-emitting element. That is, during the operation of the display, the border 200 arranged at the edge of the display screen 100 does not emit light and is only used to protect the edge of the display screen 100. The optical member 300 is attached to the display surface of the display screen 100 and is used to refract and reflect the light emitted by the display screen 100, so that when the image generated when the display screen 100 is powered on passes through the optical member 300 for two refractions, the area of the emerging image increases and the emerging light expands outward. In this way, when the display screens 100 are spliced, the light emitted by two adjacent display screens 100 deflects towards the intersection of the two, thus solving the problems of shadow or seam caused by the non-deflection or small deflection of the light emitted by the traditional display screen 100 and the non-light-emitting border 200. After the light is emitted, the viewer actually traces back along the emerging light to the display screen 100, that is, the viewing line of the viewer is the same as the path of the emerging light of the display screen 100 but in the opposite direction. To facilitate the description of the visual blanking effect of the display, in this embodiment, the extension and deflection process of the light is described from the perspective of the observer, that is, the change of the viewing line is described to reflect the change of the emerging light of the display.

[0042] The optical member 300 is fixedly connected to the display surface of the display screen 100 through a high-strength adhesive tape, an adhesive sheet, a transparent adhesive film or a transparent adhesive sheet. The optical member 300 includes a middle part 310 and an edge part 320 surrounding and adjacent to the middle part 310. Preferably, the middle part 310 and the edge part 320 of the optical member 300 are integrally formed. The optical member 300 can be formed by die casting or processed by cutting and polishing on a preset transparent glass plate or resin plate to form the middle part 310 and the edge part 320. The edge part 320 includes a lower surface 321 that cooperates with the display surface, an upper surface 322 facing away from the display surface, and an end surface 323 connecting the lower surface 321 and the upper surface 322 and away from the middle part 310. The end surface 323 is a plane, a curved surface or a combination of a plane and a curved surface. In this embodiment, the end surface 323 is a vertical surface relative to the display surface, the upper surface 322 is a plane, and the lower surface 321 is a gradually concave curved surface. It should be noted that the end surface 323 being a vertical surface relative to the display surface means that the connection line between the top and the bottom of the end surface 323 is perpendicular to the display surface; similarly, when the connection line between the top and the bottom of the end surface 323 is arranged at an angle to the display surface, the end surface 323 is an inclined surface relative to the display surface. When the end surface 323 is a vertical surface or an inclined surface relative to the display surface, the end surface 323 can be either a plane, a curved surface or a combination of a plane and a curved surface.

[0043] Please refer further to Figure 2, the upper surface 322 includes a first dentate microprism array with the tooth depth gradually decreasing from the edge portion 320 towards the middle portion 310. Preferably, only the first dentate microprism array is provided on the upper surface 322. The first dentate microprism array is disposed at a position on the upper surface 322 adjacent to the frame 200, that is, at the edge position of the upper surface 322. When a viewer views an image on the display screen 100 from a first viewing angle, that is, a vertical viewing angle directly facing the display screen 100, since the light rays exiting from the lower surface 321 to the upper surface 322 are refracted by the first dentate microprism array, assuming here that the viewer's line of sight can be deflected light rays, then the viewer's viewing line of sight is refracted orderly at each microprism of the first dentate microprism array in the opposite direction, and after being refracted again by the gradually changing concave surface of the lower surface 321, it falls orderly on the display surface of the display screen 100. Since all the viewing lines of sight fall on the display surface and no line of sight falls on the frame 200 of the display screen 100, that is, the viewer views a complete borderless image, achieving the visual disappearance of the border. From the perspective of the propagation of image light rays, that is, the light rays emitted by the display screen 100 are deflected once by the gradually changing concave surface of the lower surface 321. When the once-deflected light rays are transmitted to the upper surface 322, they are refracted orderly at each microprism of the first dentate microprism array, and the light rays are further deflected outwards to expand the image display range.

[0044] Please refer to Figure 3 , when a viewer views an image on the display screen 100 from a second viewing angle, that is, from a large angle obliquely in front of the display surface, due to the presence of the first dentate microprism array, the inclined line of sight (i.e., the reverse virtual line of the light rays exiting from the image on the display screen 100) is refracted through the outer side surface of each microprism, that is, on the side surface of the microprism facing away from the central portion, and after passing through the first dentate microprism array, it undergoes a second refraction at the lower surface 321. Compared with the image viewing area at the first viewing angle, the viewing area at the second viewing angle further shifts towards the middle of the display screen 100. At this time, it is even less likely to see the seam projected by the frame 200, and the effect of border disappearance is better. It should be noted that in this embodiment, the reason for making the tooth depth of the first dentate microprism array gradually decrease from the edge portion 320 towards the middle portion 310 is to ensure that in the section transitioning from the edge to the middle of the optical member 300, the angle between the outer side surface of each microprism and the display screen 100 gradually decreases, that is, the inclination degree of the outer side surface of each microprism gradually becomes gentle. In this way, the width of the outer side surface of each microprism is significantly greater than the width of the inner side surface of the microprism, and the outer side surface of the microprism blocks the inner side surface of the microprism, so that as much as possible of the light rays exiting from the display screen 100 are refracted through the outer side surface of the microprism to ensure that the image light rays are deflected towards the side of the display screen 100. In other words, the viewing line of sight of the viewer is refracted through the outer side surface of the microprism to ensure that the viewing area completely falls within the display area of the display screen 100.

[0045] It should be further noted that in this embodiment, by setting the lower surface 321 as a gradually changing concave curved surface, the viewing line of sight is refracted twice at the gradually changing concave curved surface, avoiding the total reflection of the viewing line of sight on the lower surface 321 (the total reflection light rays are as shown by the dotted broken lines with arrows in Figure 3 ), and thus unable to enter the display surface of the display screen 100 (i.e., the horizontal dotted line in Figure 3 ), which would otherwise form a viewing shadow area, so as to ensure the viewing effect of the image on the display screen 100.

[0046] Please refer to Figure 4 , Figure 4 which shows the structure of the blanking border display 10 in the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the end face 323 is an inclined surface relative to the display surface, and the positive projection of the inclined surface on the display surface covers the border 200 of the display screen 100, that is, the width of the positive projection of the inclined surface on the display surface is greater than or equal to the width of the border 200. In addition, in the first embodiment, the border 200 is located in the cavity formed by the lower surface 321 and the display surface and at the edge of the cavity, while in this embodiment, the bottom of the end face 323 is skewed towards the central part of the optical member 300, the border 200 is located outside the cavity formed by the lower surface 321 and the display surface, and the border 200 is located below the top of the end face 323 and is covered by the positive projection of the end face 323 on the display surface.

[0047] Furthermore, the end face 323 is a reflecting surface or a total reflecting surface. The end face 323 being a reflecting surface or a total reflecting surface is applicable to the cases where the end face 323 is a plane, a curved surface, or a combination of a plane and a curved surface, and the end face 323 is a vertical surface or an inclined surface.

[0048] Further in combination with Figure 5 and Figure 6 , when the viewer views the image on the display screen 100 at a vertical viewing angle, the viewing line of sight is sequentially refracted by the micro - prisms of the first toothed micro - prism array and the gradually changing concave curved surface of the lower surface 321 and then falls on the display surface of the display screen 100. Since the border 200 is located outside the cavity formed by the lower surface 321 and the display surface, during the process of the micro - prisms refracting the viewing line of sight, the viewing line of sight will necessarily deflect towards the inside of the end face 323, that is, the viewing line of sight cannot fall on the border 200, thus achieving the effect of border blanking.

[0049] When the viewer views the image on the display screen 100 at an inclined angle, the viewing line of sight is refracted once by the microprisms of the first toothed microprism array. After the first refraction, the viewing line of sight is reflected on the inclined surface and reaches the gradually varying concave surface of the lower surface 321. Subsequently, it undergoes a second refraction at the gradually varying concave surface, thus smoothly reaching the display surface of the display screen 100 to avoid seeing the shadow of the frame 200 and achieving frame blanking. In this way, when the end face 323 of the edge portion 320 of the optical member 300 is a vertical surface, the viewing line of sight directly falls on the frame 200 after being refracted by the microprisms (as shown by the dashed line in Figure 6 ), resulting in the problem that the frame 200 is still visible. Therefore, the blanking frame display at any viewing angle is realized.

[0050] Please refer to Figure 7 and Figure 8 , Figure 7 which shows the structure of the blanking frame display 10 in the third embodiment of the present invention. Figure 8 is an enlarged view of its edge. The difference between this embodiment and the second embodiment is that the lower surface 321 in the second embodiment is a single-trend gradually varying concave surface, and the distance between the single-trend gradually varying concave surface and the upper surface 322 gradually decreases from the edge portion 320 towards the middle portion 310; while in this embodiment, the lower surface 321 is a double-trend gradually varying concave surface, and the distance between the double-trend gradually varying concave surface and the upper surface 322 first gradually decreases and then gradually increases from the edge portion 320 towards the middle portion 310, and gradually tends to connect with the lower surface 321 of the middle portion 310. It can be understood that the region where the distance between the double-trend gradually varying concave surface and the upper surface 322 gradually increases smoothly transitions to the lower surface 321 of the middle portion 310. Designing the lower surface 321 as a double-trend gradually varying concave surface in this embodiment has the advantage that the optical member 300 can be directly processed using an existing standard plate of appropriate thickness without using an expensive special forming die, which can greatly reduce the processing cost of the optical member 300.

[0051] Please refer to Figure 9 and Figure 10 , Figure 9 which shows the structure of the blanking frame display 10 in the fourth embodiment of the present invention. Figure 10 is an enlarged view of its edge. The difference between this embodiment and the second embodiment is that the end face 323 in this embodiment is an inclined surface relative to the display surface. Specifically, the inclined surface is a concave surface bent towards the middle portion 310 of the optical member 300.

[0052] Please further refer to Figure 11 , when the viewer views the image on the display screen 100 at an inclined angle (i.e., a large viewing angle), the viewing lines of sight at the same viewing angle at different positions (such as Figure 11After being refracted once by the micro - prisms of the first toothed micro - prism array, the two dashed broken lines with arrows shown (in the figure) are reflected or totally reflected inside the inclined surface, and the viewing line of sight after reflection undergoes secondary refraction at the concave surface of the lower surface 321 and reaches the display surface of the display screen 100 at approximately the same inclination angle, enabling the viewer to see an image with uniform brightness when viewing at an inclined viewing angle.

[0053] Please refer to Figure 12 and Figure 13 , Figure 12 shows the structure of the blanking - border display 10 in the fifth embodiment of the present invention, Figure 13 which is an enlarged view of its edge. The difference between this embodiment and the second embodiment is that the lower surface 321 in this embodiment is transformed into a plane flush with the middle part 310 of the optical member 300, and the gradually - changing concave surface of the lower surface 321 is transformed into a second toothed micro - prism array arranged on this plane. The tooth depth of the second toothed micro - prism array gradually decreases from the edge part 320 to the middle part 310.

[0054] In the present invention, by effectively utilizing the refraction effect of the gradually - changing concave surface of the lower surface 321 of the edge part 320 of the optical member 300 on the viewing line of sight, the oblique viewing line of the viewer when viewing at an inclined viewing angle can smoothly reach the display surface of the display screen 100, that is, as Figure 3 shown, to achieve a large - viewing - angle viewing of the display of the present invention. To achieve the same optical effect, as Figure 14 shown, the profile line of the gradually - changing concave surface in the second embodiment is divided into several line segments by dashed lines: namely, line segment 1, line segment 2......, and then each line segment is translated and arranged on a plane flush with the middle part 310 of the optical member 300 according to the arrow shown, thereby forming a second toothed micro - prism array with gradually shallower tooth depth from the edge part 320 to the middle part 310. Since the refraction surface of each micro - prism of the second toothed micro - prism array corresponds to the refraction surface at the corresponding position of the original gradually - changing concave surface, therefore, this special optical surface transformed in this embodiment can achieve the same optical characteristics as other embodiments in the present invention, and its viewing angle at an inclined viewing angle is as Figure 15 shown.

[0055] Please refer to Figure 16 and Figure 17 , Figure 16 shows the structure of the blanking - border display 10 in the sixth embodiment of the present invention, Figure 17 which is an enlarged view of its edge. The difference between this embodiment and the fifth embodiment is that in this embodiment, in addition to the first toothed micro - prism array with gradually shallower tooth depth from the edge part 320 to the middle part 310 on the upper surface 322 of the optical member 300, it also includes a curved - surface structure 324 arranged outside the first toothed micro - prism array, that is, this curved - surface structure 324 is arranged at the outermost edge of the upper side surface.

[0056] Please refer to Figure 18 When a viewer views the image of the display screen 100 with an inclined line of sight and the viewer's line of sight falls on the edge portion 320 of the optical member 300, take any two points on the curved surface structure 324, namely point a and point b, and at the same time take point c and point d on the first toothed microprism array, ensuring that the projected length of the line connecting point a and point b on the display screen 100 is the same as the projected length of the line connecting point c and point d on the display screen 100. When the viewer views through points a, b, c, and d at the same inclined viewing angle, the distance between the two inclined lines of sight entering through point a and point b is significantly smaller than the distance between the two inclined lines of sight entering through point c and point d, and the two inclined lines of sight entering through point a and point b are reflected by the end face 323 and then refracted by the second toothed microprism array and fall on the display surface, and the line of sight of the edge portion 320 can be better returned or converged. In other words, when the curved surface structure 324 is provided outside the first toothed microprism array, during the process of the viewer viewing the image of the display screen 100 with a large viewing angle, compared with the case where the curved surface structure 324 is not provided, the transition characteristics of the edge portion 320 of the display will be better.

[0057] Please refer to Figure 19 and Figure 20 , Figure 19 shows the structure of the blanking border display 10 in the seventh embodiment of the present invention, Figure 20 and is an enlarged view of its edge. The difference between this embodiment and the second embodiment is that a wedge-shaped light guide member 325 is provided on the inclined surface of the optical member 300, at least one surface of the wedge-shaped light guide member 325 is a reflective surface, and the remaining surfaces of the wedge-shaped light guide member 325 are total reflection surfaces. Preferably, in this embodiment, the outer surface of the wedge-shaped light guide member 325 is set as a reflective surface, and the remaining surfaces of the wedge-shaped light guide member 325 are set as total reflection surfaces. The wedge-shaped light guide member 325 is made of glass or resin material, and includes a bottom plane 3251 in contact with the display surface, a first inclined plane 3252 connected to one end of the bottom plane 3251 and adjacent to the end face 323, a second inclined plane 3253 connected to the other end of the bottom plane 3251 and parallel to the first inclined plane 3252, and a third inclined plane 3254 connecting the first inclined plane 3252 and the second inclined plane 3253, wherein the bottom plane 3251 is connected to the display surface by glue or an adhesive sheet, the length of the first inclined plane 3252 is greater than the length of the second inclined plane 3253, the first inclined plane 3252 is attached to the end face 323 and there is an air gap between the first inclined plane 3252 and the end face 323, and the second inclined plane 3253 is in contact with the frame 200. Further, the inner side surface of each microprism of the first toothed microprism array is a vertical surface relative to the display surface.

[0058] Please refer to Figure 21, when the viewer views the image on the display screen 100 at an inclined angle and the viewing line of sight falls on the inner side surface of the micro prism, the viewing line of sight refracts on the vertical inner side surface and deflects in the direction outside the edge portion 320, and then enters the wedge-shaped light guide 325 through the end surface 323. Since the wedge-shaped light guide 325 includes a plurality of reflecting surfaces or total reflecting surfaces, the viewing line of sight refracted by the first toothed micro prism and the end surface 323 is reflected multiple times in the wedge-shaped light guide 325. Specifically, the viewing line of sight refracts through the inner side surface of the micro prism and enters the optical member 300, exits from the end surface 323 of the optical member 300, and then enters the wedge-shaped light guide 325 again from the inner side surface of the wedge-shaped light guide 325 (the surface of the wedge-shaped light guide 325 adjacent to the end surface 323), and is repeatedly reflected or totally reflected between the two wedge-shaped surfaces of the wedge-shaped light guide 325, and then exits from the bottom surface of the wedge-shaped light guide 325 and falls on the image display surface of the display screen 100, thereby realizing the blanking of the frame 200. In this embodiment, assuming that there is no wedge-shaped light guide 325, this viewing line of sight will refract out from the end surface 323 of the optical member 300 (as shown by the dotted line in Figure 21 ), this viewing line of sight will not fall on the image display surface and is likely to fall on the frame 200, thus seeing the shadow of the frame 200 and affecting the viewing effect.

[0059] It should be noted that in each of the above embodiments, the display screen 100 can be any one of a liquid crystal display screen, a plasma display screen, and an oled display screen. During actual production, the type of the display screen 100 can be selected according to the image display requirements. It only needs to bond the optical member 300 to the display surface of the display screen 100, which will not be elaborated here.

[0060] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0061] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed 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 deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A blanking border display, comprising a display screen with a border provided at its periphery, and an optical member covering the display surface of the display screen, characterized in that, the optical member includes a middle portion and an edge portion, the edge portion surrounds the middle portion and is adjacent to the middle portion; the edge portion includes a lower surface cooperating with the display surface, an upper surface facing away from the display surface, and an end surface connecting the lower surface and the upper surface and away from the middle portion, the upper surface includes a first tooth-shaped microprism array with the tooth depth gradually decreasing from the edge portion to the middle portion, and the upper surface further includes a curved surface structure provided outside the first tooth-shaped microprism array; the lower surface is a gradually changing concave curved surface with the distance from the edge portion to the middle portion gradually changing, or includes a second tooth-shaped microprism array with the tooth depth gradually changing from the edge portion to the middle portion; the end surface is an inclined surface relative to the display surface, and the positive projection of the inclined surface on the display surface covers the border of the display screen; a wedge-shaped light guide is provided on the inclined surface, the wedge-shaped light guide is made of glass or resin material, the outer surface of the wedge-shaped light guide is set as a reflecting surface, and the remaining surfaces of the wedge-shaped light guide are set as total reflecting surfaces; the viewing line of sight is refracted into the optical member through the inner side surface of the microprism, then exits from the end surface of the optical member, and then enters the wedge-shaped light guide from the inner side surface of the wedge-shaped light guide again, and is repeatedly reflected or totally reflected between the two wedge-shaped surfaces of the wedge-shaped light guide, and then exits from the bottom surface of the wedge-shaped light guide and falls on the image display surface of the display screen.

2. The blanking border display according to claim 1, wherein, The end surface is a plane, a curved surface or a combination of a plane and a curved surface.

3. The blanking border display according to claim 2, characterized in that, The end surface is a reflecting surface or a total reflecting surface.

4. The blanking border display according to claim 1, characterized in that, The lower surface is a single-trend gradually changing concave curved surface, and the distance between the single-trend gradually changing concave curved surface and the upper surface gradually decreases from the edge portion to the middle portion.

5. The blanking border display according to claim 1, wherein The tooth depth of the second tooth-shaped microprism array gradually decreases from the edge portion to the middle portion.

Images