TWI835630B - Display device - Google Patents

Abstract

A display device includes a backlight module, a display screen, and an optical film set. The display screen is located on the backlight module. The display screen has a first display area and a second display area that are arranged along a first direction and joint at a borderline. The optical film set is located between the backlight module and the display screen. The optical film set includes a first viewing angle control film and a brightness enhancement film. The first viewing angle control film is located in an orthographic projection of the first display area on the display screen and has a first viewing angle control film inner edge that is adjacent to the borderline. The brightness enhancement film is located in an orthographic projection of the first display area and between the first viewing angle control film and the backlight module. The brightness enhancement film has a brightness enhancement film inner edge that is adjacent to the borderline. A distance between an orthographic projection of the brightness enhancement film inner edge on the display screen and the borderline is larger than a distance between an orthographic projection of the first viewing angle control film inner edge on the display screen and the borderline.

Description

display device

The present disclosure relates to a display device.

Splicing panels can form display media of different sizes and styles in different application environments, and bring users a more diverse visual experience. With the development of technology, the borders of display screens are narrowed to provide a wider visual effect. However, this also makes the optical systems of adjacent display screens easy to interfere with each other and causes uneven brightness near the borders, affecting the user's vision. taste.

Therefore, how to propose a display device that can solve the above problems is one of the problems that the industry is currently eager to invest in research and development resources to solve.

In view of this, one aspect of the present disclosure is to provide a display device that can effectively solve the above problems.

Some embodiments of the present disclosure relate to a display device including a backlight module, a display panel and an optical film set. The display panel is located on the backlight module. The display panel has a first display area and a second display area arranged along a first direction, and the first display area and the second display area are connected at a boundary line. The optical film set is located between the backlight module and the display panel. The optical film set includes a first privacy film and a brightness enhancement film. The first privacy-preventing piece is located within the orthographic projection of the first display area, and has an inner edge of the first privacy-preventing piece close to the intersection line. The brightness enhancement film is located within the orthographic projection of the first display area and between the first anti-peep film and the backlight module. The brightness enhancement film has an inner edge of the brightness enhancement film close to the junction line. The distance between the front projection amount of the inner edge of the brightness enhancement film and the display panel and the boundary line is greater than the distance between the front projection amount and the boundary line of the inner edge of the first privacy sheet on the display panel.

In some embodiments, the display device further includes a light viewing angle control element. The light viewing angle control element is located within the orthographic projection of the first display area of the display panel and between the display panel and the first privacy film. The light viewing angle control element has an effective display area and an inactive display area. The invalid display area has an inner edge of the invalid display area close to the boundary line, and the amount of orthographic projection of the inner edge of the first privacy sheet on the display panel is aligned with the amount of orthogonal projection of the inner edge of the invalid display area on the display panel.

In some embodiments, the front projection amount of the inner edge of the brightness enhancement film on the display panel is located within the front projection amount of the ineffective display area on the display panel.

In some embodiments, the display device further includes a light-shielding layer. The light-shielding layer is located within the orthographic projection of the invalid display area of the display panel.

In some embodiments, the difference between the front projection amount of the inner edge of the first privacy sheet on the display panel and the front projection amount of the inner edge of the brightness enhancement film on the display panel ranges from about 0.43 mm to the inactive display area on the display panel. The range of the orthographic projection.

In some embodiments, the front projection amount of the invalid display area on the display panel is at least greater than or equal to about 2 mm.

In some embodiments, the optical film set includes at least one optical film layer. The optical film layer is located between the brightness enhancement film and the backlight module.

In some embodiments, the amount of front projection of the first anti-peep film on the display panel covers the amount of front projection of the optical film layer on the display panel, and the amount of front projection of the optical film layer on the display panel is smaller than the amount of the first anti-peep film on the display panel. The amount of orthographic projection.

In some embodiments, the optical film layer has an inner edge of the optical film layer close to the intersection line, and the inner edge of the optical film layer is substantially aligned with the inner edge of the brightness enhancement film.

In some embodiments, the optical film set further includes a second privacy film. The second privacy film is located between the brightness enhancement film and the first privacy film.

In some embodiments, the difference between the front projection amount of the inner edge of the first privacy sheet on the display panel and the front projection amount of the inner edge of the brightness enhancement film on the display panel is at least greater than or equal to about 1.18 mm.

To sum up, in the display device of some embodiments of the present disclosure, the display panel is a splicing panel having a first display area and a second display area. The first display area of the display panel is provided with a first anti-peep film and a brightness enhancement film, which can provide the first display area of the display panel with an anti-peep effect and maintain the brightness of the display panel. In order to maintain the user's visual taste and avoid the problem of uneven brightness at the junction of the splicing panels (for example, the boundary line), the distance between the inner edge of the brightness enhancement film and the front projection of the display panel and the boundary line is greater than the distance between the inner edge of the first privacy film and the intersection line. Due to the distance between the orthographic projection of the display panel and the intersection line. In addition, the display device also includes a light-shielding layer covering both the inner edge of the brightness-enhancing film and the inner edge of the first privacy sheet, which can cover the uneven brightness area adjacent to the boundary line and improve the visual taste of the user.

The following disclosure provides many different embodiments or examples for implementing different features of the provided subject matter. Specific examples of components and arrangements are described below to simplify the present disclosure. Of course, these are examples only and are not intended to be limiting. For example, the following description where a first feature is formed on or on a second feature may include embodiments in which the first feature and the second feature are formed in direct contact, and may also include embodiments in which additional features may be Embodiments are formed between a first feature and a second feature such that the first feature and the second feature may not be in direct contact. Additionally, the present disclosure may repeat reference symbols and/or letters in various instances. This repetition is for simplicity and clarity and does not in itself represent a relationship between the various embodiments and/or configurations discussed.

In addition, for simplicity of description, spatially relative terms such as "below", "below", "lower", "above", "upper" and similar terms may be used herein. Describe the relationship of one element or feature to another (additional) element or feature as illustrated in the figures. These spatially relative terms are intended to encompass different orientations of elements in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As used herein, "about," "approximately," "approximately" or "substantially" generally means falling within twenty percent, within ten percent, or within one hundred percent of a given value or range. Out of five. Numerical quantities given herein are approximations, meaning that terms such as "about," "approximately," "approximately" or "substantially" may be inferred when not expressly stated otherwise.

Please refer to picture 1. FIG. 1 is a top view of a display device 100 according to some embodiments of the present disclosure. Some embodiments of the present disclosure relate to a display device 100. The display device 100 includes a backlight module 110, a display panel 120 and an optical film set 130 (please refer to Figure 2A). The display panel 120 is located on the backlight module 110 . The display panel 120 is a similar splice display. The display panel 120 has a first display area AR1 and a second display area AR2 arranged along the Y direction, and the first display area AR1 and the second display area AR2 are at the intersection line L. connected.

Please refer to Figure 2A. Figure 2A is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. The backlight module 110 includes a backplane 112 and a plurality of light sources 114 . The back plate 112 has a first surface 112a and a second surface 112b substantially perpendicular to the first surface 112a. In some embodiments, multiple light sources 114 are located on first surface 112a. In some embodiments, the light source 114 includes a light-emitting diode (LED).

Please continue to refer to Figure 2A. The optical film set 130 is located between the backlight module 110 and the display panel 120 . The light generated by the light source 114 enters the optical film group 130 along the Z direction. The optical film set 130 includes a first privacy film 131 and a brightness enhancement film 133 . In the Z direction, the first privacy sheet 131 and the brightness enhancement film 133 overlap the first display area AR1 , and the brightness enhancement film 133 is between the first privacy sheet 131 and the backlight module 110 . In some embodiments, the first privacy film 131 includes a viewing angle control film (VCF). In some embodiments, the brightness enhancement film 133 includes a film. The first privacy sheet 131 is used to limit the user's viewing angle range in the Y direction. When the light exceeds the viewing angle range of the first privacy film 131, it will be blocked by the first privacy film 131. Since the first privacy film 131 only allows part of the light to pass through, the brightness of the light will be reduced when passing through the first privacy film 131 . In order to solve the problem of brightness reduction caused by the first privacy film 131, a brightness enhancement film 133 is provided to increase the brightness.

Following the above paragraph, disposing the first privacy sheet 131 and the brightness enhancement film 133 below the first display area AR1 of the display panel 120 can provide the first display area AR1 with a privacy protection effect. In some embodiments, the display device 100 is used in a vehicle system, the first display area AR1 at least includes an active privacy panel, and the second display area AR2 at least includes a center console (Center Informative Display, CID). In some embodiments, the first display area AR1 of the display panel 120 is an entertainment panel for passenger use, and the second display area AR2 of the display panel 120 is a driver control panel. Since the first display area AR1 has an anti-peep effect, the driver cannot view the display content of the first display area AR1 from the driver's seat. The driver's line of sight can be kept simple and the driver is prevented from being distracted during driving.

Please continue to refer to Figure 2A. In some embodiments, the display device 100 further includes a light viewing angle control element 140 . The light viewing angle control element 140 is located directly below the first display area AR1 of the display panel 120 and between the display panel 120 and the first privacy sheet 131 . The light viewing angle control element 140 can further control the viewing angle range of the first display area AR1. It should be noted that although there are two light angle control elements 140 in FIG. 2A, the number of light angle control elements 140 can be increased or decreased according to usage requirements.

Please continue to refer to Figure 2A. The light viewing angle control element 140 has an ineffective display area AR3 and an effective display area AR4. The invalid display area AR3 contains circuits and has no viewing angle control effect, and the effective display area AR4 allows light to pass through the light viewing angle control element 140 in a specific angle range and be observed by the user. The invalid display area AR3 has an inner edge AR3a close to the boundary line L. In some embodiments, the orthographic projection of the inner edge 131a of the first privacy sheet 131 on the display panel 120 is aligned with the orthographic projection of the inner edge AR3a of the invalid display area AR3 on the display panel 120 . In this way, the light in the effective display area AR4 of the light viewing angle control element 140 will pass through the first privacy film 131 at the same time, ensuring that the light entering the effective display area AR4 has uniform brightness and a unified viewing angle range. In some embodiments, the invalid display area AR3 is between the effective display area AR4 and the second display area AR2, and the inner edge AR3a of the invalid display area AR3 is aligned with the boundary line L in the Z direction. In some embodiments, in the Y direction, the width L1 of the invalid display area AR3 relative to the orthographic projection of the display panel 120 is at least greater than or equal to approximately 2 mm.

Please continue to refer to Figure 2A. In some embodiments, the display device 100 further includes a light-shielding layer 150 . In the Z direction, the light shielding layer 150 is located in the invalid display area AR3, so that the light passing through the invalid display area AR3 is blocked by the light shielding layer 150. In some embodiments, the light shielding layer 150 is at least partially embedded in the light viewing angle control element 140 . In some embodiments, the light-shielding layer 150 has an inner edge 150a adjacent to the intersection line L, and in the Z direction, the inner edge 150a of the light-shielding layer 150 substantially overlaps the intersection line L to block the possible interference generated near the intersection line L. Light leakage, maintaining the user's viewing taste.

Please refer to Figure 2B. Figure 2B is a partially enlarged cross-sectional view of the display device 100 of Figure 2A. The first privacy sheet 131 has an inner edge 131a close to the boundary line L, and the brightness enhancement film 133 has an inner edge 133a close to the boundary line L. The distance L2 between the orthographic projection of the inner edge 133a of the brightness enhancement film 133 on the display panel 120 and the intersection line L is greater than the distance L2 between the orthographic projection of the inner edge 131a of the first privacy film 131 on the display panel 120 and the intersection line L, so that The brightness uniformity of the display panel 120 is improved. It should be noted that in the embodiments of FIGS. 2A and 2B , the orthographic projection of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 is aligned with the boundary line L.

Please continue to refer to Figure 2B. When the distance L2 between the front projection amount of the inner edge 133 a of the brightness enhancement film 133 on the display panel 120 and the boundary line L is greater than the distance L2 between the front projection amount of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 and the boundary line L. , can limit the light path of the light source 114, so that the light must pass through the brightness enhancement film 133 and the first privacy film 131 in order to reach the display panel 120, and at the same time prevent the light from the first display area AR1 from entering the second display area AR2 . If the distance L2 between the front projection amount of the inner edge 133 a of the brightness enhancement film 133 on the display panel 120 and the intersection line L is less than or equal to the distance L2 between the front projection amount of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 and the intersection line L. When the distance is close to the boundary line L, part of the light path adjacent to the boundary line L will only pass through the brightness enhancement film 133 and not the first privacy film 131, causing the second display area AR2 to appear bright halo near the boundary line L, affecting the user's visual taste. .

Following the above paragraph, for example, the light LT1 depicts a light path emitted from the first display area AR1 to the second display area AR2, and the light LT1 has the maximum included angle θ with the extension line of the inner edge 133a of the brightness enhancement film 133. It should be noted that although the light LT1 does not pass through the brightness enhancement film 133 before reaching the first privacy film 131 in the embodiment of FIG. 2B, in some embodiments, the light LT1 does not pass through the brightness enhancement film 133 before reaching the first privacy film 131. The brightness enhancement film 133 can be passed before. Since the distance L2 between the orthographic projection of the inner edge 133 a of the brightness enhancement film 133 on the display panel 120 and the intersection line L is greater than the distance L2 between the orthographic projection of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 and the intersection line L, The maximum included angle θ will be larger than the viewing angle range of the first privacy film 131, so the light LT1 will be blocked by the first privacy film 131 when entering the first privacy film 131, making it impossible for the user to see from the second display area AR2 Ray LT1.

Please continue to refer to Figure 2B. In some embodiments, the thickness of brightness enhancement film 133 is approximately 0.25 mm. In some embodiments, the difference between the orthographic projection amount of the inner edge 131a of the first privacy sheet 131 on the display panel 120 and the orthographic projection amount of the inner edge 133a of the brightness enhancement film 133 on the display panel 120 is at least greater than Or equal to approximately 0.433 mm to limit the light paths of the multiple light sources 114 to sequentially pass through the brightness enhancement film 133 and the first privacy film 131 before reaching the display panel 120 . In the embodiment of FIG. 2A , the difference between the amount of orthographic projection of the inner edge 131a of the first privacy sheet 131 on the display panel 120 and the amount of orthographic projection of the inner edge 133a of the brightness enhancement film 133 on the display panel 120 The value corresponds to the distance L2. The size of the distance L2 is determined based on the maximum angle θ between the optical path of the light generated by the light source 114 and the extension line of the inner edge 133 a of the brightness enhancement film 133 . In some embodiments, the maximum angle θ between the light path and the extension line of the inner edge 133a ranges from about 0˚ to about 60˚. For example, when the included angle θ is 30˚, the distance L2 is at least greater than or equal to about 0.144 mm; when the included angle θ is 45˚, the distance L2 is at least greater than or equal to about 0.25 mm; when the included angle θ is 60˚, the distance L2 At least greater than or equal to approximately 0.433 mm.

Please continue to refer to Figure 2B. In some embodiments, in the Y direction, the orthographic projection of the light shielding layer 150 on the display panel 120 has a distance L3. In some embodiments, the front projection amount of the light shielding layer 150 on the display panel 120 (ie, the distance L3 ) is greater than the front projection amount of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 and the brightness enhancement film 133 . The difference between the orthographic projection of the inner edge 133a on the display panel 120 (ie, the distance L2). When the distance L3 is greater than the distance L2, it can be ensured that the light-shielding layer 150 covers the inner edge 131a and the inner edge 133a. The light LT2 depicts a light path emitted from the second display area AR2 to the first display area AR1. In some embodiments, the light LT2 that passes through the first privacy sheet 131 but does not pass through the brightness enhancement film 133 will be blocked by the light-shielding layer 150 to avoid the problem of uneven brightness in the first display area AR1. In some embodiments, distance L3 is at least greater than or equal to about 2 mm.

Please refer back to Figure 2A. In some embodiments, the optical film set 130 includes at least one optical film layer 134 . The optical film layer 134 is located between the brightness enhancement film 133 and the backlight module 110 . In some embodiments, in the Z direction, the optical film layer 134 overlaps part of the first display area AR1 and the second display area AR2. In some embodiments, the optical film layer 134 includes at least one of a reflective film, a brightness enhancement film, a filter, a polarizing film, a phase difference plate, an alignment film, a diffusion sheet, and a light-shielding film.

Please continue to refer to Figure 2A. In some embodiments, optical film set 130 includes light guide plate 135 . The light guide plate 135 is located between the brightness enhancement film 133 and the backlight module 110 , and the orthographic projection of the light guide plate 135 on the display panel 120 covers at least part of the first display area AR1 and part of the second display area AR2 . In some embodiments, the backlight module 110 is a direct backlight module, and the light guide plate 135 has opposite light incident surfaces 135a and light exit surfaces 135b, and the light incident surface 135a faces the plurality of light sources 114. The light from the light source 114 passes through the light exit surface 135b of the light guide plate 135 along the Z direction and then enters the brightness enhancement film 133.

Please refer to Figure 3. Figure 3 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Similar to the display device 100 of FIG. 2A , the display device 200 of FIG. 3 includes a backlight module 110 , a display panel 120 and an optical film set 130A. The difference from the optical film set 130 in Figure 2A is that the optical film set 130A further includes a second privacy film 132 , and the second privacy film 132 is located between the brightness enhancement film 133 and the first privacy film 131 between. In some embodiments, the second privacy film 132 and the first privacy film 131 have different viewing angle ranges. For example, the first privacy film 131 has an angular privacy protection effect along the Y direction viewing angle, while the second privacy film 131 has a viewing angle range along the Y direction. 132 has an anti-peep effect along the X-direction viewing angle. In some embodiments, when the display device 100 is used in a vehicle-mounted system, the second privacy sheet 132 can be used to reduce reflections caused by the display panel 120 on the windshield to reduce visual interference to the driver. In some embodiments, the second privacy sheet 132 covers at least part of the first display area AR1 and part of the second display area AR2 at the same time, so that both the first display area AR1 and the second display area AR2 have the effect of limiting the viewing angle. .

Please continue to refer to Figure 3. In some embodiments, the thickness of the brightness enhancement film 133 and the second privacy sheet 132 is about 0.68 mm. In some embodiments, the difference between the orthographic projection amount of the inner edge 131a of the first privacy sheet 131 on the display panel 120 and the orthographic projection amount of the inner edge 133a of the brightness enhancement film 133 on the display panel 120 is between The range from about 1.18mm to the orthographic projection of the invalid display area AR3 on the display panel 120 (ie, the width L1) is to limit the light paths of the multiple light sources 114 to pass through the brightness enhancement film 133 and the second privacy film in sequence. 132 and the first privacy sheet 131 to reach the display panel 120 . In the embodiment shown in FIG. 3 , there is a gap between the amount of orthographic projection of the inner edge 131 a of the first privacy sheet 131 on the display panel 120 and the amount of orthographic projection of the inner edge 133 a of the brightness enhancement film 133 on the display panel 120 . The difference corresponds to the distance L2. As shown in Figure 2B, the size of the distance L2 is determined based on the maximum angle θ between the optical path of the light generated by the light source 114 and the brightness enhancement film 133. In some embodiments, the angle θ between the light path and the brightness enhancement film 133 ranges from about 0° to about 60°. For example, when the included angle θ is 30°, the distance L2 is at least greater than or equal to about 0.392mm; when the included angle θ is 45°, the distance L2 is at least greater than or equal to about 0.68mm; when the included angle θ is 60°, the distance L2 At least greater than or equal to about 1.18mm.

Please refer to Figure 4. Figure 4 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Similar to the display device 200 in FIG. 3 , the display device 300 in FIG. 4 includes a backlight module 110 , a display panel 120 and an optical film set 130B. The difference from the optical film set 130A in Figure 3 is that the optical film layer 134 of the optical film set 130B only covers the first display area AR1. In some embodiments, the front projection amount of the first privacy sheet 131 on the display panel 120 covers the front projection amount of the optical film layer 134 on the display panel 120 , and the front projection amount of the optical film layer 134 on the display panel 120 It is less than the front projection amount of the first privacy sheet 131 on the display panel 120 . In some embodiments, the optical film layer 134 has an inner edge 134a close to the intersection line L, and the inner edge 134a of the optical film layer 134 is substantially aligned with the inner edge 133a of the brightness enhancement film 133. In this way, the light generated by the light source 114 can sequentially pass through the optical film layer 134, the brightness enhancement film 133 and the second privacy film 132 and then enter the first privacy film 131, thereby ensuring the visual quality and quality of the first display area AR1. Privacy protection effect.

Please refer to Figure 5. Figure 5 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Similar to the display device 200 of FIG. 3 , the display device 400 of FIG. 4 includes a backlight module 110A, a display panel 120 and an optical film set 130A. The difference from the backlight module 110 in Figure 3 is that the backlight module 110A is an edge-type backlight module. The backlight module 110A includes a backplane 112 and a light source 114 . The back plate 112 includes a first surface 112a and a second surface 112b that is substantially perpendicular to the first surface 112a, and the light source 114 is disposed on the second surface 112b. In some embodiments, the optical film set 130A includes a light guide plate 135. The light guide plate 135 has a light incident surface 135a and a light exit surface 135b that is substantially perpendicular to the light incident surface 135a. The light source 114 faces the light incident surface 135a, and the light generated by the light source 114 enters the light guide surface from the light incident surface 135a.

From the above detailed description of the specific embodiments of the present disclosure, it can be clearly seen that in the display device of some embodiments of the present disclosure, the display panel is a splicing panel having a first display area and a second display area. The first display area of the display panel is provided with a first anti-peep film and a brightness enhancement film, which can provide the first display area of the display panel with an anti-peep effect and maintain the brightness of the display panel. In order to maintain the user's visual taste and avoid the problem of uneven brightness at the junction of the splicing panels (for example, the junction line), the distance between the inner edge of the brightness enhancement film and the orthographic projection on the display panel and the junction line is greater than the first prevention distance. The inner edge of the lens is the distance between the orthographic projection on the display panel and the intersection line. In addition, the display device also includes a light-shielding layer covering both the inner edge of the brightness-enhancing film and the inner edge of the first privacy sheet, which can cover the uneven brightness area adjacent to the boundary line and improve the visual taste of the user.

The foregoing summarizes the features of several embodiments so that those skilled in the art can better understand the aspects of the present disclosure. Those skilled in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. Those skilled in the art should also realize that such equivalent structures do not depart from the spirit and scope of the disclosure, and they can make various changes, substitutions and substitutions herein without departing from the spirit and scope of the disclosure.

100, 200, 300, 400: Display device 110, 110A: Backlight module 112:Back panel 112a: first surface 112b: Second surface 114:Light source 120:Display panel 130, 130A, 130B: Optical film set 131:The first privacy film 131a, 133a, 134a, 150a, AR3a: inner edge 132: Second privacy film 133:Brightening film 134: Optical coating 135:Light guide plate 135a: light incident surface 135b: light-emitting surface 140: Light viewing angle control component 150:Light shielding layer AR1: first display area AR2: Second display area AR3: Invalid display area AR4: Effective display area L: junction line L1: Width L2, L3: distance LT1, LT2: light X, Y, Z: direction 2A-2A’: line

Aspects of the present disclosure are best understood from the following detailed description when read in conjunction with the accompanying figures. It should be noted that in accordance with standard industry practice, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion. Figure 1 is a top view of a display device according to some embodiments of the present disclosure. Figure 2A is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Figure 2B is a partial enlarged cross-sectional view of the display device in Figure 2A. Figure 3 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Figure 4 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1. Figure 5 is a cross-sectional view along the cross-section indicator line 2A-2A' in Figure 1.

Domestic storage information (please note in order of storage institution, date and number) without Overseas storage information (please note in order of storage country, institution, date, and number) without

100:Display device

110:Backlight module

112:Back panel

112a: first surface

112b: Second surface

114:Light source

120:Display panel

130: Optical film set

131:The first privacy film

131a,133a,150a,AR3a: inner edge

133:Brightening film

134: Optical coating

135:Light guide plate

135a: light incident surface

135b: light-emitting surface

140: Light viewing angle control component

150:Light shielding layer

AR1: first display area

AR2: Second display area

AR3: Invalid display area

AR4: Effective display area

L: junction line

L1: Width

L2, L3: distance

X,Y,Z: direction

2A-2A’: line

Claims (11)

A display device including: a backlight module; A display panel is located on the backlight module. The display panel has a first display area and a second display area arranged along a first direction, and the first display area and the second display area are at a boundary line. connected; and An optical film set is located between the backlight module and the display panel. The optical film set includes: A first privacy film is located within an orthographic projection of the first display area and has an inner edge of the first privacy film close to the boundary line; and A brightness enhancement film located within the orthographic projection of the first display area and between the first privacy sheet and the backlight module, the brightness enhancement film having an inner edge of the brightness enhancement film close to the boundary line , A distance between an orthographic projection of the inner edge of the brightness enhancement film on the display panel and the boundary line is greater than a distance between an orthographic projection of the inner edge of the first privacy sheet on the display panel and the boundary line. The display device as described in claim 1 further includes: A light viewing angle control element is located within the orthographic projection of the first display area of the display panel and between the display panel and the first privacy film. The light viewing angle control element has an effective display area and an ineffective display area. display area, the invalid display area has an inner edge of the invalid display area close to the boundary line, and the inner edge of the first privacy sheet is between the front projection amount of the display panel and the inner edge of the invalid display area is between An orthographic projection is aligned. The display device of claim 2, wherein the front projection amount of the inner edge of the brightness enhancement film on the display panel is located within the front projection amount of the invalid display area on the display panel. The display device as described in claim 3 further includes: A light-shielding layer is located within the orthographic projection of the invalid display area on the display panel. The display device of claim 3, wherein there is a difference between the front projection amount of the inner edge of the first privacy sheet on the display panel and the front projection amount of the inner edge of the brightness enhancement film on the display panel. The range is between about 0.43 mm and the orthographic projection amount of the invalid display area on the display panel. The display device of claim 5, wherein the front projection amount of the invalid display area on the display panel is at least greater than or equal to about 2 mm. The display device as claimed in claim 1, wherein the optical film set includes: At least one optical film layer is located between the brightness enhancement film and the backlight module. The display device of claim 7, wherein the orthographic projection amount of the first privacy sheet on the display panel covers an orthographic projection amount of the at least one optical film layer on the display panel, and the at least one optical film layer The front projection amount on the display panel is less than the front projection amount of the first privacy sheet on the display panel. The display device of claim 8, wherein the at least one optical film layer has an inner edge of the optical film layer close to the boundary line, and the inner edge of the optical film layer is substantially aligned with the inner edge of the brightness enhancement film. The display device as claimed in claim 1, wherein the optical film set further includes: A second privacy film is located between the brightness enhancement film and the first privacy film. The display device of claim 10, wherein there is a difference between the front projection amount of the inner edge of the first privacy sheet on the display panel and the front projection amount of the inner edge of the brightness enhancement film on the display panel. At least greater than or equal to approximately 1.18 mm.

Images