TW201321848A - Display apparatus - Google Patents

Abstract

A display apparatus includes a panel module and a backlight module. The panel module has a display region. The display region has a first sub-region and a second sub-region that are adjacent to each other. The panel module is disposed on the backlight module. The light that is emitted from the first sub-region and the second sub-region respectively has a first average brightness and a second average brightness. The second average brightness is 1.2 to 2 times of the first average brightness.

Description

Display device

The present invention relates to a display device, and more particularly to a display device having a seamless multi-display panel module.

In terms of the significant benefits of LCD panels in advertising marketing or entertainment, large panels have certain market potential. However, the development and production of large panels by various panel manufacturers are still limited by certain cost and technical thresholds. That is to say, the large panel cost is high and the yield is low, which is a major obstacle in the mass production process. In view of this, assembly using panels of existing dimensions is one of the solutions that can be sought to manufacture large panels.

However, when assembling with a plurality of liquid crystal panels, the gap between the panels formed by the frame around the single panel causes the spliced large panel to produce a cut and discontinuous development result. Taking a common video wall as an example, even through a combination of several televisions, a large-scale image presentation can be obtained, providing outdoor display or viewing convenience, but the integrity of the picture is clearly visible due to the presence of the television frame. gap. Similarly, when a plurality of panels are combined into a single large panel, the outer panel of the individual panels also becomes a visible gap on the panel, causing the screen to be cut, resulting in a visually imperfect image presentation. Therefore, how to reduce the actual and visual gap between the panel borders is the key to whether a large liquid crystal display can achieve high image quality.

In the prior art, light transmission guides are used to transmit light from the surface of a light-emitting panel such as a small liquid crystal or plasma display to a viewing area of the large developing area to make two phases. The gaps of the adjacent illuminating panels are eliminated, forming an improved way of visually seamless large displays. However, the light-transmitting light guide plate formed by the method has a material such as an optic fiber or a glass tube which can totally reflect the input light, so that the light transmission light guide plate is expensive and the cost control is not easy; The spliced display unit is too thick, and is inconvenient to transport and assemble. In addition, there is also a method of bending the light by the cover layer on the display panel module, so that the display area is enlarged to achieve a non-slit effect. However, since the ordinary backlight module emits uniform light, the difference between the positive viewing angle and the scattered viewing angle brightness is large, for example, the scattered light is scattered at the joint of the display panel module, and the brightness is weaker than the positive viewing angle, so that the display screen is at the seam. The brightness is uneven.

In addition, the brightness uniformity between the whole or a single panel of the spliced panel, since the central portion of the liquid crystal panel must have higher brightness than the edge portion, the optical correction diaphragm (or filter) is used for the panel. The portion with a higher central brightness is filtered so that the central portion tends to be close to the surrounding brightness. However, this method will reduce the overall brightness of the liquid crystal panel, and the difference in brightness between adjacent panels may still exist.

Furthermore, if the light-transmitting light guide plate and the panel pixels are not properly matched, or the mechanical tolerance is not optimally matched, an error may occur in color or gray scale during development. Or, if the cover layer on the display panel module is not well designed, spherical aberration will occur at the joint of the display panel module, and the output image of the original panel is somewhat different.

In summary, for the communication industry, where the demand for large panels is high, it is suffering from the use of panels that are large and reasonably priced. Therefore, the design makes the spliced liquid crystal panel achieve a visual effect of seamless jointlessness, which is an issue that the industry must urgently invest in research and research.

In order to solve the problems of the prior art, a technical aspect of the present invention is a display device, which mainly provides a better range for the brightness ratio of the backlight module of the display device in the edge region, so that the entire display of the display device is displayed. The brightness of the image presented by the area is uniform (ie, the difference in brightness between the positive viewing angle and the scattering viewing angle at the seam of the display panel module is eliminated). Moreover, the display device of the present invention is also specifically designed for a transparent cover covering the display panel module. The transparent cover plate proposed by the invention can use the edging technology to obtain an aspherical edge which is not a single curvature or a slope, so that the spherical aberration and the distortion aberration can be effectively eliminated at the joint of the display panel module. In addition, the color difference of the color can also be adjusted and controlled, and the overall weight can be reduced, which is obviously helpful for improving the image quality.

According to an embodiment of the invention, a display device includes a display panel module and a backlight module. The display panel module has a display area. The display area has an adjacent first sub-display area and a second sub-display area. The display panel module is disposed on the backlight module. The light emitted by the display panel module via the first sub-display area and the second sub-display area respectively has a first average brightness and a second average brightness. And, the second average brightness is 1.2 times to 2 times the first average brightness.

In an embodiment of the invention, the display area has a first width and the second sub-display area has a second width. The second width is from 1% to 25% of the first width.

In an embodiment of the invention, the display device further includes a transparent cover. The transparent cover is disposed on the display panel module, and the transparent cover has a normal area and a modulation area. The normal area corresponds to the first sub-display area, and the modulation area corresponds to the second sub-display area.

In an embodiment of the invention, the modulation region has a contour on a cross section of an edge of the vertical display panel module.

In an embodiment of the invention, the contour is between the first endpoint and the second endpoint. The first endpoint is located at the junction of the normal zone and the modulation zone. The edge of the modulation zone has sides. The panel module is displayed substantially vertically on the side. The second endpoint is located at the junction of the side and the contour.

In an embodiment of the invention, the contour is a part of a quadratic curve.

In an embodiment of the invention, the contour is a parabolic portion.

In an embodiment of the invention, the contour is formed by a non-equal curve.

In an embodiment of the invention, the contour is formed by linearly connecting M segments, wherein M is a positive integer.

In an embodiment of the invention, the absolute values of the slopes of the straight lines are increased in a direction away from the normal region by an equal progression or in a proportional manner.

In an embodiment of the invention, the above M is 3-20.

In an embodiment of the invention, the contour is a partial regular polygon.

In an embodiment of the invention, the above M is 2-20.

In an embodiment of the invention, the second sub-display area is disposed at an edge of the display area.

In an embodiment of the invention, the second sub-display area is rectangular, L-shaped, U-shaped or lip-shaped to surround the first sub-display area.

According to another embodiment of the present invention, a display device includes a display panel module and a backlight module. The backlight module is disposed under the display panel module. The backlight module has a light emitting area, and the light emitting area has an adjacent first sub-light emitting area and a second sub-light emitting area. The light outputted by the first sub-light-emitting area and the second sub-light-emitting area respectively has a first average brightness and a second average brightness, and the second average brightness is 1.2 times to 2 times of the first average brightness.

In an embodiment of the invention, the display device further includes a transparent cover. The transparent cover is disposed on the display panel module, and the transparent cover has a normal area and a modulation area. The normal region corresponds to the first sub-light-emitting region, and the modulation region corresponds to the second sub-light-emitting region.

In an embodiment of the invention, the modulation region has a contour on a cross section of an edge of the vertical display panel module. The contour is between the first endpoint and the second endpoint. The first endpoint is located at the junction of the normal zone and the modulation zone. The edge of the modulation zone has sides. The panel module is displayed substantially vertically on the side. The second endpoint is located at the junction of the side and the contour. Also, the contour is a line segment that does not have a single curvature or slope.

In an embodiment of the invention, the second sub-light emitting region is disposed at an edge of the light emitting region. The light emitting area has a first width. The second sub-light emitting region has a second width. The second width is from 1% to 25% of the first width.

In an embodiment of the invention, the second sub-light-emitting area is rectangular, L-shaped, U-shaped or lip-shaped to surround the first sub-light-emitting area.

The embodiments of the present invention are disclosed in the following drawings, and for the purpose of illustration However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic representation.

One aspect of the present invention is a backlight module. More specifically, it mainly provides a better range for the brightness ratio of the backlight module of the display device in the edge region, so that the brightness of the image displayed by the entire display area of the display device is uniform (ie, eliminated). The difference in brightness between the positive viewing angle and the scattering viewing angle at the seam of the display panel module). Moreover, the display device of another aspect of the present invention is specifically designed for a transparent cover covering the display panel module. The transparent cover plate proposed by the invention can use the edging technology to obtain an aspherical edge which is not a single curvature or a slope, so that the spherical aberration and the distortion aberration can be effectively eliminated at the joint of the display panel module. In addition, the color difference of the color can also be adjusted and controlled, and the overall weight can be reduced, which is obviously helpful for improving the image quality.

Please refer to Figure 1A. FIG. 1A is a partial side elevational view of a display device 1 in accordance with an embodiment of the present invention.

As shown in FIG. 1A, in the embodiment, the display device 1 includes at least one display panel module 10, at least one backlight module 12, at least one transparent cover 14, at least one frame 16, and at least one splicing member 18. The backlight module 12 of the display device 1 is disposed on the frame 16. The display panel module 10 of the display device 1 is disposed on the backlight module 12. The display panel module 10 of the display device 1 has a black frame cover area BM. The transparent cover 14 of the display device 1 is disposed on the display panel module 10. In the present embodiment, the transparent cover 14 of the display device 1 and the display panel module 10 are adhered by the optical adhesive 20, but are not limited thereto. In the embodiment of the present invention, the display device 1 is spliced by a plurality of pairs of display panel modules 10 and a backlight module 12. Each of the pair of display panel modules 10 and each pair of backlight modules 12 is only provided with a common corresponding splicing member 18, that is, the splicing member 18 of the display device 1 is located at each display panel module 10 and another display. The panel module 10 is spliced at the edge, and each transparent cover 14 extends from the corresponding display panel module 10 to the corresponding splicing member 18. When each display panel module 10 is spliced with another display panel module 10, the two transparent cover plates 14 can be abutted against each other by the two sides of the corresponding corresponding splicing member 18, thereby becoming The display device 1 of the multi-display panel module 10 is seamless.

As shown in FIG. 1A, in the present embodiment, the display panel module 10 of the display device 1 has a display area. The display area of the display panel module 10 has adjacent first sub-display areas 100 and second sub-display areas 102. The light emitted by the display panel module 10 via the first sub-display area 100 and the second sub-display area 102 has a first average brightness and a second average brightness, respectively. Moreover, the present invention is specifically designed such that the second average brightness is increased to a range of 1.2 times to 2 times the first average brightness, and then the transparent cover 14 is disposed on the display panel module 10, so that the display device 1 can be The brightness of the screen presented by the transparent cover 14 is uniform throughout the display area, and the difference in brightness between the front view and the scattered view angle at the seam between the display panel modules 10 is eliminated. The method of increasing the second average brightness of the second sub-display area 102 can be achieved by changing the number and density of the magnifying mirror structures corresponding to the second sub-display area 102, but is not limited thereto.

Please refer to Figure 1B. FIG. 1B is a partial side view showing the display device 1 according to another embodiment of the present invention.

As shown in FIG. 1B, in the present embodiment, the backlight module 12 of the display device 1 has a light-emitting area. The light emitting region of the backlight module 12 has an adjacent first sub-light emitting region 120 and a second sub-light emitting region 122. The display device 1 of the present invention can also have the first sub-light-emitting area 120 and the second sub-light-emitting area 122 of the backlight module 12 having the first average brightness and the second average brightness as described above. In other words, the present invention provides a transparent cover plate 14 by setting the second average luminance of the second sub-light-emitting region 122 to a range of 1.2 times to 2 times the first average luminance of the first sub-light-emitting region 120. The display panel module 10 can also make the brightness of the entire display area of the display device 1 through the transparent cover 14 uniform, and eliminate the relationship between the front view and the scattered view angle between the display panel modules 10 . Brightness difference. The method of increasing the second average brightness of the second sub-light-emitting area 122 can be performed by adjusting the light guiding angle of the light guide plate and the reflection pattern design under the light guide plate, and adding a Fresnel lens to the second sub-light-emitting area 122. ), etc., but not limited to this.

As shown in FIGS. 1A and 1B, in the present embodiment, the transparent cover 14 of the display device 1 has a normal region 140 and a modulation region 142a. The normal area 140 of the transparent cover 14 is located above the first sub-display area 100 (FIG. 1A) of the display panel module 10 and the first sub-light-emitting area 120 (FIG. 1B) of the backlight module 12, and the transparent cover 14 The modulation region 142a is located above the second sub-display area 102 (FIG. 1A) of the display panel module 10 and the second illumination area 122 (FIG. 1B) of the backlight module 12. For convenience of description, in the embodiments shown in FIGS. 1A and 1B, the first sub-display area 100 and the second sub-display area 102 of the display panel module 10 are respectively associated with the first sub-module of the backlight module 12. The light emitting region 120 has the same area as the second light emitting region 122 and corresponds to each other. However, the invention is not limited thereto. When the display area of the display device 1 is different from the area of the light-emitting area, in an embodiment, only the normal area 140 of the transparent cover 14 may correspond to the first sub-display area of the display panel module 10 and be transparent. The modulation region 142a of the cover plate 14 may correspond to the second sub-display region 102 of the display panel module 10. Alternatively, in another embodiment, only the normal region 140 of the transparent cover 14 may correspond to the first sub-light-emitting region 120 of the backlight module 12, and the modulation region 142a of the transparent cover 14 may correspond to the backlight. The second sub-light emitting region 122 of the module 12. Since each transparent cover 14 extends from the corresponding display panel module 10 to the corresponding splicing member 18 to eliminate the gap with the other display panel module 10, the modulation of each transparent cover 14 is performed. The area of the area 142a is greater than the area of the corresponding second sub-display area 102 and the second sub-light-emitting area 122.

It is to be noted that FIG. 1A is a partial side view showing a cross section of an edge of the display panel module 10 of the display device 1. The modulation zone 142a of the transparent cover 14 has a contour CV1 in this cross section. Moreover, the contour CV1 of the modulation region 142a is between the first end point P1 and the second end point P2. The first end point P1 is located at the boundary of the normal region 140 of the transparent cover 14 and the modulation region 142a. The edge of the modulation zone 142a of the transparent cover 14 has a side 142S. The side 142S of the modulation zone 142a displays the panel module 10 substantially vertically. The second end point P2 is located at the junction of the side 142S of the modulation region 142a and the contour CV1. In this embodiment, the contour CV1 of the modulation region 142a may be a line segment that does not have a single curvature. For example, the contour CV1 of the modulation region 142a may be a partial quadratic curve, a partial parabola, or may be formed by a non-equal curve (for example, formed by a plurality of arcs connected by a circle having a different radius). ), but not limited to this. By designing the contour CV1 of the modulation region 142a as a line segment having no single curvature, the influence of the spherical aberration and the distortion aberration on the joint of the display panel module 10 can be effectively eliminated.

Please refer to Figure 1C. FIG. 1C is a partial side elevational view of the display device 1 in accordance with another embodiment of the present invention.

As shown in FIG. 1C, in the present embodiment, the components (for example, the display panel module 10, the backlight module 12, the frame 16, the splicing member 18, and the optical adhesive 20) included in the display device 1 are substantially The display device 1 in FIG. 1A is the same, and therefore will not be described again. Here, the difference between the present embodiment and the previous embodiment is described. The transparent cover plate 14 of the present embodiment has a profile CV2 of the modulation region 142b formed by a straight line connection of M segments having a single slope, wherein M is positive. Integer. Further, the absolute value of the slope of the straight line is increased in a direction away from the normal region 140 by an arithmetic progression or in a proportional manner. In the present embodiment, in order to prevent the occurrence of light from being unregulated and the image from being poor, the M may be at least 3, but is not limited thereto. In one embodiment, M is from 3 to 20. When M exceeds 20, the contour CV2 of the modulation region 142b will be close to a partial arc of the circle, so that the phenomenon of spherical aberration and distortion aberration may occur again.

Please refer to the 1D chart. FIG. 1D is a partial side elevational view of the display device 1 in accordance with another embodiment of the present invention.

As shown in FIG. 1D, in the present embodiment, each component (for example, the display panel module 10, the backlight module 12, the frame 16, the splicing member 18, and the optical adhesive 20) included in the display device 1 is substantially The display device 1 in FIG. 1C is the same, and therefore will not be described again. Here, the difference between the present embodiment and the previous embodiment is described. The outline CV3 of the modulation region 142c of the transparent cover 14 of the present embodiment is a partial regular polygon. Each side of the regular polygon is equal in length and each inner corner is equal. For example, in the embodiment, the contour CV3 of the modulation region 142c is three sides of the regular dodecagonal shape, so the sides of the three sides are equal in length, and the angle between any two sides is 150 degrees. If the contour CV3 of the modulation region 142c is a partial regular polygon, M may be at least 2, but is not limited thereto, since it is less likely to cause light to be adjusted or poor in image ductility. In a specific embodiment, M can be 2-20. Similarly, when M exceeds 20, the contour CV3 of the modulation region 142c will be close to a circle, so that the phenomenon of spherical aberration and distortion aberration may occur again. However, when the black frame area BM is wide, since the angle and height of each line of the contour CV2 cannot be elastically adjusted, the transparent cover 14 is made too large and is not easy to manufacture. In other words, when the black frame area is wider, the M is as small as possible.

Please refer to Figure 1E. FIG. 1E is a partial side elevational view of the display device 1 in accordance with another embodiment of the present invention.

As shown in FIG. 1E, in the embodiment, the components (for example, the display panel module 10, the backlight module 12, the frame 16, the splicing member 18, and the optical adhesive 20) included in the display device 1 are substantially The display device 1 in FIG. 1C is the same, and therefore will not be described again. It should be noted that if the contour CV4 of the modulation region 142d is formed by a straight line connection of M segments having no single slope, the distance of each segment of the straight line is different, so that the straight line of each segment of the contour CV4 can be elastically adjusted. Angle and height to achieve different refractive paths. For example, as shown in FIG. 1E, when light is emitted through the boundary of the black frame area BM (the human eye can observe the light set from the border of the black frame area BM and the horizontal plane by 45 degrees to 60 degrees), The light path is adjusted through the contour CV4. Therefore, when the black frame cover area BM is wide (for example, more than 0.7 mm), the angle and height of each straight line of the outline CV4 can be elastically adjusted, so that the transparent cover 14 is not too bulky and is easy to manufacture. .

Please refer to Figure 2. FIG. 2 is a top view of the display device 1 according to an embodiment of the invention, wherein the display device 1 is spliced by two display panel modules 10 (for convenience of description, the two display panel modules 10 in FIG. 2 The inter-splicing pieces are omitted but not shown).

As shown in FIG. 2, in the embodiment, the second sub-display area 102 of the display panel module 10 is disposed at the edge of the display area. Moreover, the display area of the display panel module 10 has a first width W1, the second sub-display area 102 has a second width W2, and the second width W2 is 1% to 25% of the first width W1. Therefore, regardless of whether the display panel module 10 used in the display device 1 is of a medium-sized size (10 吋 or less) or a large size (10 吋 or more), the second width W2 of the second sub-display area 102 is compared to the entire display area. A ratio of the width W1 falls within the above range, and the second average brightness of the second sub-display area 102 is set to 1.2 times to 2 times the first average brightness of the first sub-display area 100, and is further transparent. The cover plate 14 is disposed on the display panel module 10, so that the entire display area of the display device 1 can be displayed through the transparent cover 14 with a uniform brightness. In the embodiment of FIG. 2, in order to simplify the illustration, the black frame area BM is not illustrated. However, the first width W1 of the display area in this embodiment is a frame of the visible area (AA area). The first width W1 does not include the black frame area BM, that is, the first width W1 is calculated from the black frame area BM away from the edge of the edge of the display panel module 10. In addition, in practical applications, due to the tolerance, the boundary of the first width W1 of the display display area and the second width W2 of the second sub-display area 102 may be within the black frame area BM, that is, the first The width W1 will include a portion of the black frame area BM, which is encompassed by tolerances.

Similarly, the present invention can also have the light-emitting area of the backlight module 12 having a first width, the second sub-light-emitting area 122 having a second width, and the second width being 1% to 25% of the first width. As mentioned above, it will not be described again.

In addition, in the embodiment, the second sub-display area 102 of the display panel module 10 or the second illumination area of the backlight module 12 can be used because the display device 1 is formed by the two display panel modules 10 . It is a rectangle to surround the first sub-display area 100, but is not limited thereto.

Please refer to Figure 3. 3 is a top view of a display device 1 according to another embodiment of the present invention, wherein the display device 1 is spliced by four display panel modules 30 (for convenience of explanation, any two display panel modules in FIG. 3 The splices between 30 are omitted and not shown).

As shown in FIG. 3, since the display device 1 is formed by splicing four display panel modules 30, the second sub-display area 302 of the display panel module 30 may be L-shaped to surround the first sub-display area. 300, but not limited to this.

Please refer to Figure 4. 4 is a top view of a display device 1 according to another embodiment of the present invention, wherein the display device 1 is spliced by six display panel modules 30, 50 (for convenience of explanation, any two display panels in FIG. 4) The splicing elements between the modules 30, 50 are omitted (not shown).

As shown in FIG. 4, since the display device 1 is formed by splicing the outer four L-shaped display panel modules 30 from the central two display panel modules 50, the second sub-display area 502 of the display panel module 50 can be It is a U shape to surround the first sub display area 500, but is not limited thereto.

Please refer to Figure 5. FIG. 5 is a top view of the display device 1 according to another embodiment of the present invention, wherein the display device 1 is spliced by nine display panel modules 30, 50, 70 (for convenience of explanation, any two of the fifth figures) The splicing members between the display panel modules 30, 50, 70 are omitted (not shown).

As shown in FIG. 5, since the display device 1 is formed by a central display panel module 70, the display panel module 30 is formed in an L-shape at four corners thereof, and the display panel module is formed in a U-shape on each of its four sides. The group 50 is formed, so the second sub-display area 702 of the display panel module 70 may be in a square shape to surround the first sub-display area 700, but is not limited thereto.

For the same reason as described above, the second sub-light-emitting area 122 of the backlight module 12 may also be rectangular, L-shaped, U-shaped or lip-shaped to surround the first sub-light-emitting area due to the difference in the number of the spliced display panel devices. 120.

Please refer to Figure 6A and Figure 6B. FIG. 6A is a schematic diagram showing the brightness of the backlight module in different positions according to an embodiment of the invention. FIG. 6B is a schematic view showing the brightness of the transparent cover plate at different positions according to an embodiment of the invention.

As shown in FIG. 6A, with reference to FIG. 1B, in the embodiment, the brightness of the first sub-light-emitting area 120 of the backlight module 12 may be a fixed value, and the brightness of the second sub-light-emitting area 122 may be toward the backlight. The direction of the edge of the module 12 is gradually increased (that is, the brightness of the first sub-light-emitting area 120 and the second sub-light-emitting area 122 is continuous at the boundary between the two). In this embodiment, the brightness of the second sub-light-emitting area 122 of the backlight module 12 is gradually increased toward the edge of the backlight module 12 in a stepwise manner, but is not limited thereto. As long as the second average luminance of the second sub-light-emitting region 122 is in the range of 1.2 times to 2 times the first average luminance of the first sub-light-emitting region 120, in another embodiment, the second sub-lighting of the backlight module 12 The brightness of the area 122 can also be gradually increased toward the edge of the backlight module 12 in a manner similar to the number of stages.

As shown in FIG. 6B, and with reference to FIG. 1B, in the present embodiment, the brightness and light of the modulation region 142 of the transparent cover 14 can be separated from the transparent cover by accurately calculating the contour CV1. The brightness of the normal region 140 of the board 14 is the same, and the user can see a picture with uniform brightness when viewing the display device 1 of the present invention from any positive viewing angle.

As shown in FIG. 6A and FIG. 6B , in this embodiment, the luminance distributions of the first sub-light-emitting region 120 and the second sub-light-emitting region 122 of the light leaving the backlight module 12 respectively correspond to the normal region where the light leaves the transparent cover 14 . The brightness distribution of the 140 and the modulation area 142 is taken as an example, but is not limited thereto. In another embodiment, the brightness distribution of the first sub-display area 100 and the second sub-display area 102 of the display panel module 10 can also be separated as shown in FIG. 6A.

In another embodiment, the brightness of the first sub-light-emitting area 120 of the backlight module 12 may be a fixed value, and the brightness of the second sub-light-emitting area 122 may also be a fixed value (ie, the first sub-light-emitting area 120 and The brightness of the second sub-light-emitting region 122 is discontinuous at the boundary between the two. It suffices that the second average luminance of the second sub-light-emitting region 122 is made 1.2 to 2 times the first average luminance of the first sub-light-emitting region 120.

From the above detailed description of the specific embodiments of the present invention, it can be clearly seen that the display device of the present invention mainly provides a better range for the brightness ratio of the backlight module of the display device in the edge region, so that the display device The brightness of the picture presented by the entire display area is uniform (that is, the difference in brightness between the front view and the scattered view angle at the seam of the display panel module is eliminated). Moreover, the display device of the present invention is also specifically designed for a transparent cover covering the display panel module. The transparent cover plate proposed by the invention can use the edging technology to obtain an aspherical edge which is not a single curvature or a slope, so that the spherical aberration and the distortion aberration can be effectively eliminated at the joint of the display panel module. In addition, the color difference of the color can also be adjusted and controlled, and the overall weight can be reduced, which is obviously helpful for improving the image quality.

While the present invention has been described above by way of example only, it is not intended to limit the invention, and the invention may be modified and modified in various ways without departing from the spirit and scope of the invention. The scope is subject to the definition of the scope of the patent application.

1. . . Display device

10. . . Display panel module

100. . . First sub-display area

102. . . Second sub-display area

12. . . Backlight module

120. . . First sub-lighting zone

122. . . Second sub-lighting zone

14. . . Transparent cover

140. . . Normal area

142a, 142b, 142c, 142d. . . Modulation zone

142S. . . side

16. . . frame

18. . . Splice

20. . . Optical glue

30, 50, 70. . . Display panel module

300, 500, 700. . . First sub-display area

302, 502, 702. . . Second sub-display area

BM. . . Black frame area

CV1, CV2, CV3, CV4. . . profile

P1. . . First endpoint

P2. . . Second endpoint

W1. . . First width

W2. . . Second width

1A is a partial side elevational view of a display device in accordance with an embodiment of the present invention.

FIG. 1B is a partial side view showing a display device in accordance with another embodiment of the present invention.

1C is a partial side elevational view of a display device in accordance with another embodiment of the present invention.

1D is a partial side elevational view of a display device in accordance with another embodiment of the present invention.

FIG. 1E is a partial side elevational view showing a display device in accordance with another embodiment of the present invention.

2 is a top view of a display device according to an embodiment of the invention, wherein the display device is spliced by two display panel modules.

FIG. 3 is a top view of a display device according to another embodiment of the present invention, wherein the display device is spliced by four display panel modules.

4 is a top view of a display device in accordance with another embodiment of the present invention, wherein the display device is spliced by six display panel modules.

FIG. 5 is a top view of a display device according to another embodiment of the present invention, wherein the display device is spliced by nine display panel modules.

FIG. 6A is a schematic diagram showing the brightness of the backlight module in different positions according to an embodiment of the invention.

FIG. 6B is a schematic view showing the brightness of the transparent cover plate at different positions according to an embodiment of the invention.

1. . . Display device

10. . . Display panel module

100. . . First sub-display area

102. . . Second sub-display area

12. . . Backlight module

14. . . Transparent cover

140. . . Normal area

142a. . . Modulation zone

142S. . . side

16. . . frame

18. . . Splice

20. . . Optical glue

BM. . . Black frame area

CV1. . . profile

P1. . . First endpoint

P2. . . Second endpoint

Claims (20)

A display device includes: a display panel module having a display area having a first sub-display area and a second sub-display area; and a backlight module, wherein the display panel module The light output from the first sub-display area and the second sub-display area respectively has a first average brightness and a second average brightness, and the second average is disposed on the backlight module. The brightness is 1.2 to 2 times the first average brightness. The display device of claim 1, wherein the display area has a first width, and the second sub-display area has a second width, the second width being 1% to 25% of the first width. The display device of claim 1, further comprising a transparent cover disposed on the display panel module, wherein the transparent cover has a normal area and a modulation area, and the normal area corresponds to the first a sub display area corresponding to the second sub display area. The display device of claim 3, wherein the modulation region has a contour on a cross section perpendicular to an edge of the display panel module. The display device of claim 4, wherein the contour is between a first endpoint and a second endpoint, the first endpoint being located at a boundary between the normal region and the modulation region, the modulation The edge of the zone has a side that is substantially perpendicular to the display panel module and the second endpoint is located at the intersection of the side and the profile. The display device of claim 4, wherein the contour is part of a quadratic curve. The display device of claim 6, wherein the contour is a portion of a parabola. The display device of claim 4, wherein the contour is formed by a non-equal curve. The display device of claim 4, wherein the contour is formed by M-segment linear connections, wherein M is a positive integer. The display device according to claim 9, wherein the absolute value of the slope of the straight lines is increased in a direction away from the normal region by an arithmetic progression or in a proportional manner. The display device of claim 10, wherein M is 3-20. The display device of claim 9, wherein the outline is a partial regular polygon. The display device of claim 12, wherein M is 2-20. The display device of claim 1, wherein the second sub-display area is disposed at an edge of the display area. The display device of claim 1, wherein the second sub-display area is rectangular, L-shaped, U-shaped or lip-shaped to surround the first sub-display area. A display device includes: a display panel module; and a backlight module disposed under the display panel module, wherein the backlight module has a light emitting area, and the light emitting area has a first one of the adjacent sub-lights And a second sub-light-emitting area, wherein the light output by the first sub-light-emitting area and the second sub-light-emitting area respectively has a first average brightness and a second average brightness, and the second average brightness is the first The average brightness is 1.2 to 2 times. The display device of claim 16, further comprising a transparent cover disposed on the display panel module, wherein the transparent cover has a normal area and a modulation area, and the normal area corresponds to the first a sub-light-emitting area corresponding to the second sub-light-emitting area. The display device of claim 17, wherein the modulation region has a contour on a cross section perpendicular to an edge of the display panel module, the contour being between a first end point and a second end point The first end point is located at a boundary between the normal area and the modulation area, and an edge of the modulation area has a side surface substantially perpendicular to the display panel module, the second end point being located on the side surface and the side The intersection of the contours, and the contour is a line segment that does not have a single curvature or slope. The display device of claim 16, wherein the second sub-light emitting region is disposed at an edge of the light emitting region, the light emitting region has a first width, and the second sub-light emitting region has a second width, the second width It is 1% to 25% of the first width. The display device of claim 16, wherein the second sub-light-emitting area is rectangular, L-shaped, U-shaped or lip-shaped to surround the first sub-light-emitting area.