CN110782796A

CN110782796A - Display device

Info

Publication number: CN110782796A
Application number: CN201911112198.1A
Authority: CN
Inventors: 罗谚桦; 黄馨谆
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2019-04-12
Filing date: 2019-11-14
Publication date: 2020-02-11
Anticipated expiration: 2039-11-14
Also published as: CN110782796B; TW202038041A; TWI714050B

Abstract

A display device comprises a lens, a display panel and a cover plate. The display panel is arranged on the lens and is provided with a display area and an opening area, wherein the lens is aligned with the opening area, and the vertical projection of the lens on the display panel is surrounded by the display area. The cover plate is arranged on the display panel, wherein the cover plate is provided with a first area and a second area, the vertical projection of the first area on the display panel is at least partially overlapped with the display area, the vertical projection of the second area on the display panel is at least partially overlapped with the opening area, the thickness of the cover plate on the first area is larger than that of the cover plate on the second area, and the thickness of the cover plate is gradually thinner from the first area to the second area.

Description

Display device

Technical Field

The present disclosure relates to a display device.

Background

With the development of technology, consumer electronics have more and more functions. Taking a portable electronic product as an example, such as a smart phone, a camera lens can be integrated into its structure, so that the electronic product can realize the function of collecting images or images in addition to the communication function and the display function, thereby providing the portable electronic product with a video communication function.

For a portable electronic product with a camera lens, a window used by the camera lens for capturing images or videos may be formed in the structure of the portable electronic product. In contrast, the vicinity of the window also shields a portion of the imaging lens by disposing black ink. However, these black inks will affect the display area and thus reduce the display quality. Therefore, how to improve the portable electronic products in the aforementioned issues has become one of the development directions in the related art.

Disclosure of Invention

One embodiment of the invention provides a display device, which includes a lens, a display panel and a cover plate. The display panel is arranged on the lens and is provided with a display area and an opening area, wherein the lens is aligned with the opening area, and the vertical projection of the lens on the display panel is surrounded by the display area. The cover plate is arranged on the display panel, wherein the cover plate is provided with a first area and a second area, the vertical projection of the first area on the display panel is at least partially overlapped with the display area, the vertical projection of the second area on the display panel is at least partially overlapped with the opening area, the thickness of the cover plate on the first area is larger than that of the cover plate on the second area, and the thickness of the cover plate is gradually thinner from the first area to the second area.

In some embodiments, the display device further includes a glue layer disposed between the cover plate and the display panel, and the sum of the thickness of the display panel in the first region and the thickness of the glue layer is a distance d, the cover plate has a third region located between the first region and the second region, wherein the thickness of the cover plate in the third region is gradually reduced, the third region of the cover plate forms an interface with the light transmission medium located on the cover plate, the refractive index of the cover plate is n1, the refractive index of the light transmission medium is n2, the display panel includes a light shielding layer located between the display region and the opening region and surrounding the opening region, and the width of the light shielding layer is L1, wherein the display region of the display panel is configured to provide a light beam traveling toward the cover plate, the viewing angle of the light beam with respect to the display panel is an angle θ, and the incident angle of the light beam in the third region of the cover plate is an angle θ i, the width of the illumination range of the light beam after the light beam is refracted by the interface is L2, and the width substantially satisfies the following conditions:

L2＝[d*(sinα)-L1*(sinα)*(tanθi)](cos α), and

wherein the percentage of the ratio of the width L2 to the width L1 is between 10% and 100%.

In some embodiments, the display panel includes a transparent substrate having a hole, and the hole is at least partially overlapped with the opening region such that the lens is aligned with the hole.

In some embodiments, the display panel includes a transparent substrate, and a portion of the transparent substrate at least partially overlaps the opening region such that the lens is aligned with the portion of the transparent substrate.

In some embodiments, the cover plate has a third region between the first region and the second region, and the thickness of the cover plate in the third region is gradually reduced, wherein the display device further comprises a dielectric material layer disposed on the cover plate and at least covering the second region and the third region of the cover plate.

In some embodiments, the dielectric material layer further covers the first region of the cover plate, and a first upper surface of the dielectric material layer is relatively flat with respect to a second upper surface of the cover plate formed by the first region, the second region and the third region.

In some embodiments, the display panel includes a light-shielding layer, the light-shielding layer is located between the display region and the opening region and is annular, and an inner boundary of the light-shielding layer is adjacent to a boundary of a range of the opening region.

In some embodiments, the cover plate has a third region located between the first region and the second region, and the thickness of the cover plate in the third region is gradually reduced, wherein a vertical projection of an intersection line formed by the first region and the third region on the display panel is aligned with an outer boundary of the light shielding layer or located between an inner boundary and an outer boundary of the light shielding layer.

In some embodiments, the display panel further includes a polarizer disposed on the light-shielding layer, wherein the cover plate has a third region disposed between the first region and the second region, and the thickness of the cover plate in the third region is gradually reduced, and a vertical projection of an intersection line formed by the second region and the third region on the display panel is aligned with a boundary of the polarizer or is within the polarizer.

In some embodiments, the inner boundary of the light-shielding layer is formed into a circular contour, and the diameter of the circular contour is between 2 mm and 4 mm.

By means of the configuration, the inclined plane can be formed between the first area and the second area, so that the light beams provided by the display area of the display panel can be deflected after passing through the inclined plane, the range of the display area visually identified by a viewer is larger than the range of the actual display area, and the viewing experience of the viewer on the display panel is improved.

Drawings

Fig. 1A is a schematic top view illustrating a display device according to a first embodiment of the disclosure.

Fig. 1B is an enlarged schematic view of a region 1B of the display device of fig. 1A.

FIG. 1C is a schematic cross-sectional view taken along line 1C' -1C of FIG. 1A.

FIG. 1D is a schematic diagram illustrating the display panel separating the display area and the opening area by the light-shielding layer.

Fig. 1E is a schematic diagram illustrating an optical path of a light beam provided by a display region of a display panel.

FIG. 1F is a diagram illustrating a relationship between a viewing angle and a compensation rate of a display panel.

Fig. 2 is a schematic cross-sectional view illustrating a display device according to a second embodiment of the disclosure.

Fig. 3 is a schematic cross-sectional view illustrating a display device according to a third embodiment of the disclosure.

Fig. 4A is an enlarged schematic view illustrating a partial region of a display device according to a fourth embodiment of the disclosure.

Fig. 4B is a schematic cross-sectional view illustrating a display device according to a fourth embodiment of the disclosure.

[ notation ] in the specification.

100A, 100B, 100C, 100D display device

102 light beam

102A, 102B boundary

104 range

106 light ray

108 optical transmission medium

110 lens

120 backlight module

122 frame

124 light source module

126 shim

130 display panel

131 first polarizer

132 array substrate

132H, 134H hole

132S, 134S light-transmitting substrate

134 color filter layer substrate

136 light-shielding layer

136D diameter

136I inner boundary

136O outer boundary

138 second polarizer

139A data line

139B scan line

140 colloidal layer

150 cover plate

152 inclined plane

160 layer of dielectric material

1B region

1C' -1C line segment

Display area of A1

A2 opening area

d distance

EA. EB Block

L1, L2 Width

O1 first opening

O2 second opening

O3 third opening

P point

R1 first region

R2 second region

R3 third region

T1 first thickness

T2 second thickness

S1 first upper surface

S2 second upper surface

α included angle

Angle theta, theta i, theta t

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings.

The use of the terms first, second, third, etc. herein to describe various elements, components, regions, layers is understood. These elements, components, regions, layers should not be limited by these terms. These terms are only used to distinguish one element, component, region or layer from another. Thus, a first element, component, region or layer discussed below could be termed a second element, component, region or layer without departing from the teachings of the present invention.

As used herein, "about" or "approximately" or "substantially" includes the stated value and the average value within an acceptable range of deviation of the stated value, as determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" or "substantially" may mean within one or more standard deviations of the stated values, such as within ± 30%, ± 20%, ± 10%, ± 5%.

The display device of the present disclosure may utilize a refraction mechanism, so that the light beam provided from the display area of the display panel may be deflected after passing through the inclined plane above the display panel, so that the range of the display area visually identified by the viewer may be larger than the range of the actual display area, thereby enhancing the viewing experience.

Referring to fig. 1A, fig. 1B and fig. 1C, fig. 1A is a schematic top view illustrating a display device 100A according to a first embodiment of the disclosure. Fig. 1B is an enlarged schematic view of the region 1B of the display device 100A of fig. 1A. FIG. 1C is a schematic cross-sectional view taken along line 1C' -1C of FIG. 1A.

The display device 100A in the present embodiment is a portable electronic device, such as a smart phone. The portable electronic device can provide a display function through the display area, and can also realize the function of collecting images or images through the lens, and the lens is correspondingly surrounded by the display area. However, the disclosure is not limited to the type of the portable electronic device, and in other embodiments, the display device may be other electronic devices that can capture images or images by configuring a lens, such as a notebook computer.

The display device 100A includes a lens 110, a backlight module 120, a display panel 130, a colloid layer 140, and a cover plate 150, and the colloid layer 140 is omitted from fig. 1B in order to avoid overcomplicating fig. 1B. The lens 110 and the backlight module 120 are disposed on the same side of the display panel 130, and the colloid layer 140 and the cover plate 150 are disposed on the other side of the display panel 130. In other words, the display panel 130 is disposed on the lens 110 and the backlight module 120, and the colloid layer 140 and the cover plate 150 are disposed on the display panel 130.

The display panel 130 includes a first polarizer 131, an array substrate 132, a color filter substrate 134, a light-shielding layer 136 and a second polarizer 138, wherein the array substrate 132, the color filter substrate 134 and the light-shielding layer 136 are disposed between the first polarizer 131 and the second polarizer 138.

The array substrate 132 may include a thin film transistor array (not shown in fig. 1B), and each thin film transistor in the thin film transistor array may be electrically connected to a different pixel electrode (not shown in fig. 1B) to form a plurality of pixels. The array substrate 132 further includes scan lines and data lines (not shown in fig. 1B) for addressing each tft in the tft array to control the potential state (switching to high or low potential) of the pixel electrode.

The color filter layer 134 is disposed on the array substrate 132 and may include color resists (not shown in fig. 1B) with different colors, such as a red color resist, a green color resist and a blue color resist, so that the light beams can have corresponding colors after passing through the color filter layer 134, thereby enabling the display panel 130 to provide images.

The light-shielding layer 136 is disposed in the color filter layer substrate 134 and is used to distinguish the display area a1 and the opening area a2 of the display panel 130. For the display area a1 and the opening area a2 of the display panel 130, the display area a1 refers to an area where pixels can be arranged and used to provide a display screen, for example, a time pattern and a function pattern are shown in the display area a1 of fig. 1A, and the opening area a2 is an area where pixels are not arranged and not used to provide a display screen. That is, the display area a1 and the opening area a2 of the display panel 130 are defined according to whether pixels are disposed and the corresponding traces.

For example, referring to fig. 1C and fig. 1D, fig. 1D is a schematic diagram of the display panel 130 being separated into a display area a1 and an opening area a2 by the light shielding layer 136, and the viewing angle of fig. 1D is perpendicular to the display panel 130. In FIG. 1D, no pixels are disposed in the opening area A2, and the data lines 139A and scan lines 139B extending from the display area A1 in the longitudinal and transverse directions are arranged to bypass the opening area A2 when passing through and around the opening area A2, i.e., the extending paths of the data lines 139A and scan lines 139B bypassing the opening area A2 become curved or arced. In addition, since pixels and traces for electrical connection are disposed in the display area a1, and no pixel is disposed in the opening area a2, the light transmittance of the opening area a2 can be greater than that of the display area a 1.

The light shielding layer 136 is disposed at a position corresponding to the data line 139A and the scan line 139B bypassing the opening area a2 to provide a shielding effect. Further, the light-shielding layer 136 is annular and has an inner boundary 136I and an outer boundary 136O. The area of the display panel 130 outside the outer boundary 136O of the corresponding light shielding layer 136 is the display area a1, and the outer boundary 136O of the light shielding layer 136 is adjacent to the range boundary of the display area a 1. The display panel 130 has an opening area a2 in an area corresponding to the inner boundary 136I of the light shielding layer 136, and the inner boundary 136I of the light shielding layer 136 is adjacent to the range boundary of the opening area a 2. In other words, the light shielding layer 136 may be regarded as being located between the display area a1 and the opening area a2, and the light shielding layer 136 surrounds the opening area a 2.

Please refer back to fig. 1A, fig. 1B and fig. 1C. The array substrate 132 and the color filter layer substrate 134 may each include a transparent substrate, such that during the fabrication process of the array substrate 132 and the color filter layer substrate 134, the respective layers or devices thereof may be formed on the transparent substrate, wherein the transparent substrate may be a glass substrate, for example. Since the display area a1 and the opening area a2 of the display panel 130 are defined according to whether pixels are disposed and the corresponding traces are disposed, the display panel 130 can realize the opening area a2 through various configurations.

For example, the transparent substrate of each of the array substrate 132 and the color filter substrate 134 may be cut away to leave a hole corresponding to the opening area a2, or the transparent substrate of each of the array substrate 132 and the color filter substrate 134 may not be cut away corresponding to the opening area a 2.

Taking the example shown in fig. 1C as an example, the transparent substrates of the array substrate 132 and the color filter substrate 134 are not cut at the positions corresponding to the opening area a2 (represented by the

portions

132S and 134S of the transparent substrates), so that the

portions

132S and 134S of the transparent substrates at least partially overlap the opening area a 2. For the

portion

132S, 134S of the transparent substrate corresponding to the opening area a2 and not cut off, the portion may not have pixels, and thus has a light transmittance greater than that of the display panel 130 corresponding to the display area a 1.

The first polarizer 131 may be connected to the array substrate 132, wherein the first polarizer 131 has a first opening O1, and the first opening O1 is located in the opening area a 2. The second polarizer 138 may be connected to the color filter layer substrate 134, and the second polarizer 138 may be located on the light-shielding layer 136, i.e., a perpendicular projection of the second polarizer 138 on the color filter layer substrate 134 may at least partially overlap the light-shielding layer 136. The second polarizer 138 has a second opening O2, and the second opening O2 is also located in the opening area a 2. That is, the first opening O1 of the first polarizer 131 and the second opening O2 of the second polarizer 138 both overlap the opening area a 2.

The lens 110 disposed under the display panel 130 is aligned with the opening area a2 of the display panel 130, and more specifically, the lens 110 is aligned with the overlapping portions of the array substrate 132 and the color filter substrate 134, i.e., the

portions

132S and 134S of the respective transparent substrates, and the overlapping portions overlap with the opening area a 2. The opening area a2 can be used as a window for the lens 110 to capture an object image or a target image. In some embodiments, the inner boundary 136I of the light-shielding layer 136 is formed in a circular contour, and the diameter 136D of the circular contour is between 2 mm and 4 mm. In other words, the window provided to the lens 110 will also have a circular profile and a diameter of between 2 mm and 4 mm. The vertical projection of the lens 110 on the display panel 130 may be surrounded by the display area a1, such that in the top view of the display device 100A, it can be seen that the window provided for the lens 110 is surrounded by the display area a1 of the display panel 130, as shown in fig. 1A.

In addition, since the lens 110 is aligned with the opening area a2 of the display panel 130, the lens 110 is protected from being shielded by the first and

second polarizers

131 and 138. In other words, when the lens 110 captures the target image or the target image, the target image or the target image may not be affected by the polarization effect because the path passes through the first opening O1 of the first polarizer 131 and the second opening O2 of the second polarizer 138.

The backlight module 120 disposed under the display panel 130 can provide light to the display area a1 of the display panel 130. The backlight module 120 may include a frame 122 and a light source module 124, wherein the frame 122 may be connected to the first polarizer 131 through a spacer 126. The frame 122 may have a third opening O3, and the first opening O1 of the first polarizer 131 and the third opening O3 of the frame 122 may communicate. The lens 110 may be located in the third opening O3 to be integrated with the backlight module 120 on the same side of the display panel 130. The light source module 124 may be disposed between the frame 122 and the first polarizer 131, wherein the light source module 124 may include a light source and a light guide plate (not shown), and the light source may provide uniform forward illumination to the display panel 130 through the light guide plate.

The cover plate 150 disposed on the display panel 130 may be fixed by the glue layer 140, wherein the glue layer 140 may have a light-transmitting property, for example, the glue layer 140 may be an optical glue. Specifically, the glue layer 140 may cover the second polarizer 138 and fill the second opening O2 of the second polarizer 138, so that the cover plate 150 has sufficient connection strength to the display panel 130.

The cover plate 150 has light transmittance, and the material thereof may include organic matter, glass, or a combination thereof, for example, the cover plate 150 may be resin, acryl, or tempered glass. The cover plate 150 can be used to protect the display panel 130, such as providing dust-proof, scratch-resistant and moisture-resistant effects, and can also enhance the viewing experience of the viewer on the display panel 130. The following description will further describe the mechanism for enhancing the viewing experience of the display panel 130 by the viewer.

The cover plate 150 may have a first region R1 and a second region R2, wherein the first region R1 may correspond to the display area a1 of the display panel 130, and the second region R2 may correspond to the opening area a2 of the display panel 130. Specifically, the vertical projection of the first region R1 on the display panel 130 at least partially overlaps the display area a1, and the vertical projection of the second region R2 on the display panel 130 at least partially overlaps the opening area a 2.

The thickness of the cover plate 150 may vary in different regions. For example, the cover plate 150 may have a first thickness T1 in the first region R1 and a second thickness T2 in the second region R2, wherein the first thickness T1 is greater than the second thickness T2. In addition, the thickness of the cap plate 150 is gradually thinner from the first region R1 to the second region R2. Specifically, the cover plate 150 may further have a third region R3, the third region R3 is located between the first region R1 and the second region R2, and the cover plate 150 has a third thickness T3 in the third region R3, wherein the third thickness T3 is gradually thinner along a direction from the first region R1 to the second region R2.

With this configuration, the cover plate 150 may be formed as the inclined surface 152 in the third region R3, and the inclined surface 152 is located above the light shielding layer 136, i.e. the vertical projection of the inclined surface 152 on the display panel 130 at least partially overlaps the light shielding layer 136. Specifically, the starting end position of the inclined surface 152 formed by the cover plate 150 in the third region R3 corresponds to the position of the boundary line formed by the first region R1 and the third region R3, and the vertical projection of the boundary line formed by the first region R1 and the third region R3 on the display panel 130 is aligned with the outer boundary 136O of the light shielding layer 136. The terminal position of the inclined plane 152 corresponds to the position of the boundary line formed by the second region R2 and the third region R3, and the vertical projection of the boundary line formed by the second region R2 and the third region R3 on the display panel 130 is located between the inner boundary 136I and the outer boundary 136O of the light-shielding layer 136 and is also located in the second polarizer 138.

The inclined plane 152 formed by the cover plate 150 in the third region R3 deflects the light beam provided from the display region a1 of the display panel 130 after passing through the inclined plane 152, thereby enhancing the visual perception provided to the viewer.

Referring to fig. 1E, fig. 1E is a schematic diagram illustrating the optical path of the light beam 102 provided by the display area a1 of the display panel 130. The light beam 102 provided by the display area a1 of the display panel 130 can be viewed as the image provided by the display area a1 of the display panel 130, wherein the area EA of fig. 1E represents the optical path of the light beam 102, and the area EB of fig. 1E represents the equivalent visual sensation provided by the light beam 102 to the viewer.

The irradiation range of the light beam 102 provided from the display area a1 of the display panel 130 may be from the boundary 102A to the boundary 102B. When the light beam 102 travels to the inclined plane 152 formed by the cover plate 150 in the third region R3, the light beam 102 is deflected due to the difference in refractive index. For example, when the display device is placed in an atmospheric environment, the surface of the cover plate 150 may form an interface with air, such as the slope 152 formed by the cover plate 150 in the third region R3. Since air can be regarded as a light transmission medium and the refractive index of the cover plate 150 is different from that of air, the light beam 102 passing through the interface is refracted to generate deflection. Since the light beam 102 is deflected at a position directly above the light shielding layer 136, and the light beam 102 travels in a direction away from the light shielding layer 136 after deflection, a partial range (marked as range 104) directly above the light shielding layer 136 can sense illumination compensation caused by the light beam 102, thereby reducing the width of the light shielding layer 136 in visual effect.

Specifically, the light-shielding layer 136 in the block EA of fig. 1E has a width L1, the width L1 is, for example, the difference between the inner diameter and the outer diameter of the light-shielding layer 136, and the region 104 directly above the light-shielding layer 136 for providing illumination compensation has a width L2. Therefore, the width of the light-shielding layer 136 in terms of the visual effect of the viewer is the width L1 minus the width L2. Since the range 104 directly above the light-shielding layer 136 can compensate the illumination, the viewer can recognize the range 104 as the display area a1, so that the range of the display area visually recognized by the viewer is larger than the range of the actual display area a1, and the existence of the light-shielding layer 136 can be reduced, thereby improving the viewing experience of the viewer on the display panel 130.

The degree of reduction of the "width of the light-shielding layer in the visual effect" can be quantified by the ratio of the width L2 to the width L1 as a numerical value, which is also called "compensation rate", and the quantified numerical value has a correlation with a partial parameter of the display device. For convenience of description, the following description of parameters related to the light beam 102 is provided by taking the light beam 106 in the irradiation range as an example.

The cover plate 150 may have a first refractive index n1, and the light transmission medium 108 (such as the aforementioned air) above the cover plate 150 may have a second refractive index n2, and the first refractive index n1 is greater than the second refractive index n2.. the sum of the thicknesses of the first region R1 of the cover plate 150 and the colloid layer 140 is represented by a distance d. for the light ray 106 provided by the display region a1 of the display panel 130 and traveling toward the cover plate 150, the viewing angle thereof with respect to the display panel 130 is an angle θ, the incident angle of the light ray 106 on the inclined surface 152 of the cover plate 150 is an angle θ i and the refraction angle is an angle θ t. the inclined surface 152 formed by the cover plate 150 in the third region R3 is an angle α with respect to the acute angle of the cover plate 150 on the upper surface of the second region R2.

From the geometric relationship, it can be seen that angle α is equal to angle θ t, and angle θ I is equal to the difference between angle α and angle θ. then, through Snell's Law, it can be inferred that angle α substantially satisfies equation (I), as follows:

further, by using the relationship of the distance d, the width L1, and the width L2 on the trigonometric function corresponding to the above-mentioned angles, it can be inferred that the width L2 substantially satisfies the equation (II), as shown below:

L2＝[d*(sinα)-L1*(sinα)*(tanθi)](cosα)………(II)

the above equations (I) and (II) can be used as the basis for adjusting the compensation rate. For example, in the case that some of the parameters are fixed, the viewing angle (angle θ) of the display panel can be adjusted to adjust the ratio of the compensation rates.

For example, please see fig. 1F, in which fig. 1F is a graph illustrating a relationship between a viewing angle and a compensation rate of a display panel. In FIG. 1F, the horizontal axis is the panel viewing angle in degrees; the vertical axis is the compensation rate (i.e., the aforementioned ratio of width L2 to width L1) in percent. FIG. 1F depicts the relationship as 430 microns at a width L1; distance d was set at 500 microns; the first refractive index n1 is determined to be 1.5; and a second refractive index n2 is set to 1.

As shown in point P of fig. 1F, when the display panel provides a light beam traveling toward the cover plate to present a viewing angle (angle θ) corresponding to the display panel of about 12 degrees, the achievable compensation rate is about 35%, and in addition, the included angle α under this condition would be about 34 degrees, and the width L2 would be about 278 micrometers, i.e., the width of the light shielding layer 136 is reduced from 430 micrometers to 278 micrometers in visual effect.

The above conditions are merely exemplary for convenience of description and are not intended to limit the present disclosure. From the above description, it is understood that the compensation rate can be adjusted by adjusting the above-described parameters. By adjusting the parameters, a compensation rate percentage of between 10% and 100% can be achieved.

Please refer back to fig. 1B and fig. 1C. In the case that the inclined plane 152 formed by the cover plate 150 in the third region R3 is used to deflect the light beam, the starting end position of the inclined plane 152 is designed not to exceed the outer boundary 136O of the light shielding layer 136, and the ending end position of the inclined plane 152 is designed to be located in the second polarizer 138, so as to avoid the above-mentioned refraction mechanism from deriving factors that would reduce the viewing experience, for example, the too large difference in brightness of the image provided by the portion of the display region a1 near the opening region a2 can be avoided, or the light beam refracted by the inclined plane 152 can be avoided from affecting the image or image acquisition of the lens 110.

Referring to fig. 2 again, fig. 2 is a schematic cross-sectional view of a display device 100B according to a second embodiment of the disclosure, wherein the cross-sectional position may be the same as that of fig. 1C. At least one difference between the present embodiment and the first embodiment is that the transparent substrates of the array substrate 132 and the color filter substrate 134 of the present embodiment have

holes

132H and 134H connected to each other. Specifically, the respective light-transmitting substrates of the array substrate 132 and the color filter layer substrate 134 may be cut away at a position corresponding to the opening area a2, so as to form

holes

132H and 134H, and the

holes

132H and 134H at least partially overlap the opening area a 2. The coating position of the colloid layer 140 may correspond to the positions of the

holes

132H and 134H, for example, the colloid layer 140 is not coated to cover the

holes

132H and 134H. In addition, the lens 110 can be aligned with the

holes

132H and 134H, and the

holes

132H and 134H can be used as windows for capturing images or images.

Referring to fig. 3 again, fig. 3 is a schematic cross-sectional view of a display device 100C according to a third embodiment of the disclosure, wherein the cross-sectional position is the same as that of fig. 1C. At least one difference between the present embodiment and the first embodiment is that the display device 100C of the present embodiment further includes a dielectric material layer 160. The dielectric material layer 160 is disposed on the cover plate 150 and covers at least the second region R2 and the third region R3 of the cover plate 150.

In the above description of equations (I) and (II), since air is used as the light transmission medium above the cover plate 150, the calculation results of equations (I) and (II) are related to the refractive index of air. In this embodiment, the dielectric material layer 160 is used as the light transmission medium above the cover plate 150, wherein the refractive index provided by the dielectric material layer 160 is different from the refractive index of air, specifically, the refractive index of the dielectric material layer 160 is greater than the refractive index of air and smaller than the refractive index of the cover plate 150. The calculation results of equations (I) and (II) can be adjusted by the refractive index of the dielectric material layer 160, so that the adjustment of the compensation rate can be more flexible.

In addition, the dielectric material layer 160 may further cover the first region R1 of the cover plate 150, such that the dielectric material layer 160 is completely covered on the cover plate 150, and the first upper surface S1 of the dielectric material layer 160 is relatively flat with respect to the second upper surface S2 of the cover plate 150 formed by the first region R1, the second region R2 and the third region R3. With this configuration, the dielectric material layer 160 can provide the display device 100C with a flat surface, so as to enhance the user experience of the display device 100C. On the other hand, the dielectric material layer 160 may also protect the cover plate 150 from having a wavy second upper surface S2 (the wavy is caused by different thicknesses of the cover plate 150 in various regions), so as to prevent the inclined surface 152 from being damaged due to impact.

Please see fig. 4A and fig. 4B. Fig. 4A is an enlarged schematic view illustrating a partial area of the display device 100D according to a fourth embodiment of the disclosure, wherein the partial area illustrated in fig. 4A may have a similar range as that illustrated in fig. 1B. Fig. 4B is a schematic cross-sectional view illustrating a display device 100D according to a fourth embodiment of the disclosure, wherein the cross-sectional position may be the same as that in fig. 1C. At least one difference between the present embodiment and the first embodiment is that the relative positional relationship between the starting end position of the inclined surface 152 and the outer boundary 136O of the light shielding layer 136 in the present embodiment is different from that in the first embodiment. Specifically, the starting end position of the inclined plane 152 corresponds to the position of the boundary line formed by the first region R1 and the third region R3, and the vertical projection of the boundary line formed by the first region R1 and the third region R3 of the present embodiment on the display panel 130 is located between the inner boundary 136I and the outer boundary 136O of the light shielding layer 136. Such a modified configuration may make the display device 100D more flexible in manufacturing, thereby improving process reliability.

Although the present embodiment is described by adjusting the position of the starting end of the inclined surface 152 of the cover plate 150, the disclosure is not limited thereto, and when the display device 100D has different display requirements, the relative position relationship between the position of the ending end of the inclined surface 152 and other layer bodies may also be adjusted. For example, the terminal position of the inclined plane 152 corresponds to the position of the boundary line formed by the second region R2 and the third region R3, although the vertical projection of the boundary line formed by the second region R2 and the third region R3 in the present embodiment on the display panel 130 is located inside the second polarizer 138, in other embodiments, the boundary line may be aligned with the boundary of the second polarizer 138.

In summary, the display device of the present disclosure includes a lens, a display panel and a cover plate. The display panel is arranged between the lens and the cover plate and is provided with a display area and an opening area. The lens may be aligned with the open area and surrounded by the display area. The cover plate is provided with a first area and a second area, and the first area and the second area are respectively positioned on the display area and the opening area of the display panel. The cover plate is tapered in thickness from the first region to the second region, thereby forming a chamfer between the first region and the second region. The light beams provided from the display area of the display panel can be deflected after passing through the inclined plane, so that the range of the display area visually identified by a viewer is larger than the range of the actual display area, and the viewing experience of the viewer on the display panel is improved.

While the invention has been described in terms of various specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A display device, comprising:

a lens;

a display panel arranged on the lens and having a display area and an opening area, wherein the lens is aligned with the opening area, and the vertical projection of the lens on the display panel is surrounded by the display area; and

the cover plate is arranged on the display panel and provided with a first area and a second area, the vertical projection of the first area on the display panel is at least partially overlapped with the display area, the vertical projection of the second area on the display panel is at least partially overlapped with the opening area, the thickness of the cover plate on the first area is larger than that of the cover plate on the second area, and the thickness of the cover plate is gradually thinner from the first area to the second area.

2. The display apparatus according to claim 1, further comprising a glue layer disposed between the cover plate and the display panel, wherein the sum of the thickness of the display panel in the first region and the thickness of the glue layer is a distance d, wherein the cover plate has a third region disposed between the first region and the second region, wherein the thickness of the cover plate in the third region is gradually thinner, the third region of the cover plate forms an interface with a light transmission medium disposed on the cover plate, the cover plate has a refractive index n1, the light transmission medium has a refractive index n2, wherein the display panel comprises a light shielding layer disposed between the display region and the opening region and surrounding the opening region, and the light shielding layer has a width L1, wherein the display region of the display panel is configured to provide a light beam traveling toward the cover plate, and the angle of view of the light beam relative to the display panel is an angle theta, the angle of incidence of the light beam on the third area of the cover plate is an angle thetai, the width of the illumination range of the light beam after being refracted by the interface is a width l, and the width substantially satisfies:

L2＝[d*(sinα)-L1*(sinα)*(tanθi)](cos α), and

3. The display device of claim 1, wherein the display panel comprises a transparent substrate having a hole, and the hole at least partially overlaps the opening region such that the lens is aligned with the hole.

4. The display device of claim 1, wherein the display panel comprises a transparent substrate, a portion of the transparent substrate at least partially overlapping the open area such that the lens is aligned with the portion of the transparent substrate.

5. The display device of claim 1, wherein the cover plate has a third region between the first region and the second region, and the cover plate is thinner in the third region, wherein the display device further comprises a dielectric material layer disposed on the cover plate and covering at least the second region and the third region of the cover plate.

6. The display device of claim 5, wherein the dielectric material layer further covers the first region of the cover plate, and a first upper surface of the dielectric material layer is relatively flat with respect to a second upper surface of the cover plate formed by the first region, the second region and the third region.

7. The display device according to claim 1, wherein the display panel comprises a light-shielding layer, the light-shielding layer is annular and located between the display region and the opening region, and an inner boundary of the light-shielding layer is adjacent to a boundary of a range of the opening region.

8. The display device according to claim 7, wherein the cover has a third region located between the first region and the second region, and the thickness of the cover in the third region is gradually thinner, wherein a vertical projection of an intersection line formed by the first region and the third region on the display panel is aligned with an outer boundary of the light-shielding layer or located between the inner boundary and the outer boundary of the light-shielding layer.

9. The display device according to claim 7, wherein the display panel further comprises a polarizer disposed on the light-shielding layer, wherein the cover plate has a third region disposed between the first region and the second region, and the thickness of the cover plate in the third region is gradually reduced, wherein a vertical projection of the second region and the third region on the display panel is aligned with a boundary of the polarizer or falls within the polarizer.

10. The display device according to claim 7, wherein the inner boundary of the light-shielding layer is formed into a circular contour having a diameter of 2 mm to 4 mm.