Hidden display

Abstract

The invention provides a hidden display. The hidden display comprises a display panel, a transparent substrate and a decorative layer, the transparent substrate is disposed on the display panel. The decorative layer is arranged on the surface of the transparent substrate. The decorative layer comprises a plurality of open pores, and the distribution positions of the open pores meet the following conditions: the plurality of open pores comprise a group of open pore sequences distributed along a direction, and the projections of the open pore centers of two adjacent open pores in the group of open pore sequences on a coordinate axis have a first projection difference value, the projections of the hole centers of the other two adjacent holes in the group of hole sequences on the coordinate axis have a second projection difference value, and the difference value between the first projection difference value and the second projection difference value is greater than 20 microns.

Description

Technical Field

[0001] The present invention relates to a hidden display, and more particularly to a hidden display having decorative patterns and openings on its surface. Background Art

[0002] With the development of technology, displays have been widely used in various aspects of life. For example, vehicle-mounted displays are installed in vehicles to provide vehicle information, road information, contact data, navigation information, etc. Traditional vehicle-mounted displays are installed on the center console, and the screen presented in the unlit state is black, which is rather obtrusive in the vehicle interior. In order to make the vehicle-mounted display present an integrated appearance with the interior decoration, the industry has tried to provide hidden displays that can cooperate with the vehicle interior. However, in existing hidden displays, due to their structural design problems, the displayed screen will have Moiré patterns. Therefore, the industry still needs to continuously research and develop to provide hidden displays that can cooperate with the vehicle interior and have good display effects. Summary of the Invention

[0003] One object of the present invention is to provide a hidden display, the decorative layer on its surface has a plurality of openings, and the distribution of the openings has a special design, so that the hidden display can have good display quality when displaying a screen.

[0004] The present invention provides a hidden display, which includes a display panel, a transparent substrate, and a decorative layer. The transparent substrate is disposed on the display panel. The decorative layer is disposed on the surface of the transparent substrate, and the decorative layer includes a plurality of openings. The distribution positions of the plurality of openings satisfy the following conditions: the plurality of openings include a set of opening sequences distributed along a direction, and the projections of the opening centers of two adjacent openings in the set of opening sequences on a coordinate axis have a first projection difference, and the projections of the opening centers of another two adjacent openings in the set of opening sequences on the coordinate axis have a second projection difference, and the difference between the first projection difference and the second projection difference is greater than 20 micrometers (μm).

[0005] With the above design of the opening distribution, when the display panel is not lit, it is not easy to see the openings from the surface of the decorative layer, and the display panel can be hidden in the pattern of the decorative layer; when the display panel is lit, the displayed screen can be clearly displayed on the display side of the hidden display, not easily interfered by the pattern of the decorative layer, and not easily generate Moiré patterns. Brief Description of the Drawings

[0006] Figure 1 It is a partial cross-sectional schematic diagram of the first embodiment of the hidden display of the present invention.

[0007] Figure 2This is the appearance of the hidden display of the present invention when no picture is being displayed.

[0008] Figure 3 This is a partially enlarged top view schematic diagram of the first embodiment of the hidden display of the present invention.

[0009] Figure 4 This is another partially enlarged top view schematic diagram of the first embodiment of the hidden display of the present invention.

[0010] Figure 5 This is yet another partially enlarged top view schematic diagram of the first embodiment of the hidden display of the present invention.

[0011] Figure 6 This is a schematic diagram of the display screens of the examples and comparative examples of the hidden display of the present invention.

[0012] Figure 7 This is a partially sectional schematic diagram of a variant embodiment of the first embodiment of the hidden display of the present invention.

[0013] Figure 8 This is a partially external view schematic diagram of the second embodiment of the hidden display of the present invention.

[0014] Figure 9 This is a partially external view schematic diagram of a variant embodiment of the second embodiment of the hidden display of the present invention.

[0015] Explanation of the reference numerals:

[0016] 100: Hidden display

[0017] 110: Display panel

[0018] 110R: Display area

[0019] 112: First substrate

[0020] 114: Second substrate

[0021] 115: Light-emitting layer

[0022] 116: Display medium layer

[0023] 118: Circuit layer

[0024] 120: Transparent substrate

[0025] 120a, 130a: Upper surface

[0026] 130: Decorative layer

[0027] 132: Opening

[0028] 132r: Radius of the opening

[0029] 140: Light source

[0030] A1, A2, A3, A4, A5, A6, A1’, A2’, A3’, A4’, A1”, A2”, A3”, A4”, A5”: Selected apertures

[0031] d1, d2, d3, d4, d5, d6, d7, d8: Differences

[0032] D1, D2, D3: Directions

[0033] DC: Decorative pattern

[0034] Dr: Sequence direction

[0035] DS: Display side

[0036] EL: Light ray

[0037] IM: Image

[0038] MO: Moiré pattern

[0039] O: Origin

[0040] P1, P2, P3, P4, P5, P6, P1’, P2’, P3’, P4’: Vectors

[0041] P 1,x , P 2,x , P 3,x , P 4,x , P 1,y , P 2,y , P 3,y , P 4,y , P 1,x ’, P 2,x ’, P 1,y ’, P 2,y ’, P 3,y ’, P 4,y ’: Projection amount

[0042] PX: Sub-pixel

[0043] RL1, RL2, RL3: Reference lines

[0044] R: Radius of curvature

[0045] X: Horizontal axis

[0046] Y: Vertical axis Detailed implementation method

[0047] The content of the present invention will be described in detail below in conjunction with specific embodiments and drawings. And in order to make the content of the present invention clearer and easier to understand, the following drawings may be simplified schematic diagrams, and the elements therein may not be drawn to scale. Moreover, the number and size of each element in the drawings are only for illustration and are not used to limit the scope of the present invention.

[0048] Please refer to Figures 1 to 2 , in which Figure 1 is a partial cross-sectional schematic diagram of the first embodiment of the hidden display of the present invention, Figure 2 is a top view schematic diagram of the first embodiment of the hidden display of the present invention, Figure 2 showing the appearance when the hidden display does not display an image. The hidden display 100 of the present invention can be applied to a vehicle as a vehicle display, but not limited thereto. The hidden display 100 can be applied to any device or equipment where a hidden display is to be set. According to the present invention, the hidden display 100 includes a display panel 110, a transparent substrate 120, and a decorative layer 130. Among them, the transparent substrate 120 is disposed on the display panel 110, and the decorative layer 130 is disposed on the surface of the transparent substrate 120, for example, disposed on the upper surface 120a of the transparent substrate 120, so that the transparent substrate 120 is located between the decorative layer 130 and the display panel 110, but not limited thereto. In a variant embodiment, the decorative layer 130 can be disposed on the lower surface of the transparent substrate 120, so that the decorative layer 130 is located between the transparent substrate 120 and the display panel 110. The decorative layer 130 includes a plurality of openings 132. Specifically, the openings 132 can be micro-perforations that penetrate the decorative layer 130, from the upper surface 130a of the decorative layer 130 to the lower surface of the decorative layer 130. The transparent substrate 120 can serve as a cover plate of the hidden display 100 to protect the display panel 100. The material of the transparent substrate 120 can include, for example, glass, quartz, sapphire, ceramics, polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), other suitable materials, or a combination of the above materials, and is not limited to the above. The decorative layer 130 can include any material that can provide a predetermined pattern, texture, and / or ornamentation, for example, including ink materials, and the decorative layer 130 can be a single-layer or composite-layer structure. As Figure 2As shown, the upper surface 130a of the decorative layer 130 on the surface of the hidden display 100 serves as the display side of the hidden display 100. The surface of the decorative layer 130 has decorative patterns DC. When the display panel 110 is in the off state or standby state, it does not emit light to display an image. At this time, the upper surface 130a of the decorative layer 130 can visually present a complete and consistent decorative pattern DC, and is not easily affected by the setting of the openings 132 in terms of the presentation of its pattern.

[0049] Furthermore, when the display panel 110 is turned on, its display area 110R generates light EL, which generally emits along the direction D1, passes through the transparent substrate 120 and the openings 132, and displays an image on the display side of the hidden display 100. In this case, visually, the decorative pattern DC of the decorative layer 130 will fade or even disappear, and will not affect the image displayed by the display panel 110. The display side of the hidden display 100 can clearly display an image IM, and it is not easy to see the decorative pattern DC on the surface of the decorative layer 130 in the image IM. The direction D1 can be parallel to the normal direction of the upper surface 120a of the transparent substrate 120, or can be parallel to the stacking direction of the decorative layer 130, the transparent substrate 120 and the display panel 110.

[0050] Please refer to Figure 3 , Figure 3 is a partially enlarged top view schematic diagram of an embodiment of the hidden display of the present invention, in which the decorative pattern of the decorative layer is omitted. To achieve the above effects, the openings 132 in the decorative layer 130 of the present invention have a specific distribution pattern and meet the following conditions. When a virtual coordinate system is set on the surface of the decorative layer 130, it has an origin O and a coordinate axis, such as the horizontal axis X. Select a set of opening sequences A from multiple openings 132, where the opening sequence A includes multiple selected openings, such as selected opening A1, selected opening A2, selected opening A3, selected opening A4, selected opening A5, and selected opening A6, which are generally distributed along a direction (i.e., the sequence direction Dr), and the projections of the opening centers of two adjacent selected openings in the opening sequence A on the coordinate axis have a first projection difference, and the projections of the opening centers of another two adjacent selected openings in the opening sequence A on the coordinate axis have a second projection difference, where the difference between the first projection difference and the second projection difference is greater than 20 micrometers. Among them, the openings 132 in the set of opening sequences A meet the following conditions: The openings 132 in the opening sequence A include two adjacent reference openings, and the extension line of the connection line of the opening centers of the reference openings is defined as a reference line RL1 extending along the sequence direction Dr, and the shortest distances between the opening centers of the other openings 132 in the opening sequence A and the extension line RL1 are respectively less than or equal to the opening radius of the opening 132.

[0051] Specifically, the opening 132 may have substantially the same size and shape (e.g., circular), which has an opening radius 132r. The origin O of the virtual coordinate system can be set at any position of the decorative layer 130 corresponding to the display area 110R, and the coordinate axes can be straight axes passing through the origin O and parallel to any direction. Figure 3 For example, the origin O is set at the lower left corner of the transparent substrate 120, and the straight axis is the horizontal axis X parallel to the direction D2, but this is not limited thereto. The method of selecting the above opening sequence A may include: setting a reference line RL1 that at least extends through the opening centers of any two adjacent openings 132, and the extending direction of the reference line RL1 is the above sequence direction Dr. For example, the selected opening A1 and the selected opening A2 are used as reference openings, so that the reference line RL1 extends through the opening centers of the selected opening A1 and the selected opening A2; and from the plurality of openings 132, several openings 132 adjacent to the reference line RL1 are selected as the set of opening sequence A. The selection principle is to select other openings 132 whose shortest distance from the reference line RL1 is less than or equal to the opening radius 132r along the reference line RL1. For example, the selected opening A3, the selected opening A4, the selected opening A5, and the selected opening A6 are selected to obtain the opening sequence A that also includes the selected opening A1 and the selected opening A2. The above shortest distance refers to the shortest perpendicular distance from the opening center of the opening 132 to the reference line RL1. As can be seen from the above, the definition that the opening 132 is adjacent to the reference line RL1 is that the shortest distance from its opening center to the reference line RL1 is less than or equal to the opening radius 132r. Therefore, each opening 132 in the opening sequence A will at least partially overlap with the reference line RL1. For example, the edge of the selected opening is flush with the reference line RL1 or the reference line RL1 passes through the selected opening. The above method of selecting a set of opening sequences, the definition of the opening adjacent to the reference line, and the definition of the shortest distance between the opening and the reference line are applicable to other embodiments and variant embodiments of the present invention. There is a vector P1 pointing from the origin O to the center position of the selected opening A1, a vector P2 pointing from the origin O to the center position of the selected opening A2, a vector P3 pointing from the origin O to the center position of the selected opening A3, a vector P4 pointing from the origin O to the center position of the selected opening A4, a vector P5 pointing from the origin O to the center position of the selected opening A5, and a vector P6 pointing from the origin O to the center position of the selected opening A6. The projection of the vector P1 on the horizontal axis X is P 1,x , the projection of the vector P2 on the horizontal axis X is P 2,x , the projection of the vector P3 on the horizontal axis X is P 3,x , the projection of the vector P4 on the horizontal axis X is P 4,x, and so on. From the selected selected openings, any two adjacent selected openings are selected to calculate the difference in the projection amount on the horizontal axis X, and then the difference between the two is calculated. For example, one group selects the selected opening A1 and the adjacent selected opening A2, and the other group selects the selected opening A3 and the adjacent selected opening A4. The projection amount P 1,x and the projection amount P 2,x The difference is defined as the first projection difference ΔP 1,x ( Figure 3 represented by the difference d1 in), the projection amount P 3,x and the projection amount P 4,x The difference is defined as the second projection difference ΔP 3,x ( Figure 3 represented by the difference d2 in), and, according to the design of the opening 132 of the present invention, the difference between the first projection difference ΔP 1,x and the second projection difference ΔP 3,x is greater than 20 microns, that is, the opening 132 of the present invention satisfies the design condition │ΔP 1,x –ΔP 3,x │> 20μm. The above-mentioned "adjacent" two openings 132 refer to the distance between these two openings 132 being very small or having the minimum distance, or it can be expressed that in one direction, there are no other openings 132 between these two openings 132. The meaning of the above "adjacent" can be applied to other paragraphs of this specification and will not be repeated.

[0052] In other words, according to the present invention, in the same opening sequence, the i-th opening and the adjacent (i + 1)-th opening can be selected from all the selected selected openings to calculate the difference in the projection amount on the coordinate axis (taking the horizontal axis X as an example) as the first projection difference ΔP i,x , and the j-th opening and the adjacent (j + 1)-th opening are selected from the selected selected openings to calculate the difference in their projection amounts as the second projection difference ΔP j,x , and │ΔP i,x –ΔP j,x │> 20μm, where │ΔP i,x –ΔP j,x │ can be called the projection difference variation condition or the "ΔP difference".

[0053] On the other hand, the virtual coordinate system set on the surface of the decorative layer 130 can also be a two-dimensional coordinate system, which has a horizontal axis X and a vertical axis Y, respectively parallel to the direction D2 and the direction D3, and the horizontal axis X and the vertical axis Y are, for example, perpendicular to each other. In addition to satisfying the aforementioned projection difference variation condition on the horizontal axis X, the configuration of the opening 132 can also satisfy a similar projection difference variation condition on the vertical axis Y. For example, the selected opening A1 and the adjacent selected opening A2 have projection amounts P 1,y and the projection amount P2,y , with a third projection difference ΔP therebetween 1,y ( Figure 3 represented by a difference d3 in Figure 3 ), the selected opening A3 and the adjacent selected opening A4 respectively have a projection amount P on the vertical axis Y 3,y and the projection amount P 4,y , with a fourth projection difference ΔP therebetween 3,y ( Figure 3 represented by a difference d4 in Figure 3 ), and the difference between the third projection difference ΔP 1,y and the fourth projection difference ΔP 3,y is greater than 20 microns, that is, the opening 132 of the present invention satisfies the design condition │ΔP 1,y – ΔP 3,y │ > 20μm.

[0054] In other words, according to the present invention, when the set virtual coordinate system is a two-dimensional coordinate system, among the selected openings, the i-th opening and the adjacent (i + 1)-th opening can be selected to calculate the projection amount difference on another coordinate axis (taking the vertical axis Y as an example) as the third projection difference ΔP i,y , and another j-th opening and the adjacent (j + 1)-th opening are selected among the selected openings to calculate their projection amount difference as the fourth projection difference ΔP j,y , and │ΔP i,y – ΔP j,y │ > 20μm, where │ΔP i,x – ΔP j,x │ can also be called the projection difference variation condition, and can also be called the "ΔP difference".

[0055] Please refer to Figure 4 , Figure 4 which is another partially enlarged top view schematic diagram of the first embodiment of the hidden display of the present invention, showing the selection of another set of opening sequences and the calculation of the projection difference variation condition. As Figure 4 shown, a two-dimensional coordinate system is set on the decorative layer 130, including the origin O and the first coordinate axis (i.e., the horizontal axis X) and the second coordinate axis (i.e., the vertical axis Y). The origin O can be located at any point in the decorative layer 130, such as but not limited to corresponding to the display area 110R ( Figure 4At the center (not shown), the first coordinate axis and the second coordinate axis can divide the decorative layer 130 into four quadrants. When selecting another set of opening sequences A', a reference line RL2 can be set on the decorative layer 130, which passes through at least the centers of two adjacent reference openings (such as the selected opening A3' and the selected opening A4') and extends along a direction, which is regarded as the sequence direction Dr. Then, from the plurality of openings 132, several other openings 132 adjacent to the reference line RL2 (such as the selected opening A1' and the selected opening A2') are selected to be used together with the selected opening A3' and the selected opening A4' as the set of opening sequences A'. Among them, the shortest distances from the selected opening A1' and the selected opening A2' to the reference line RL2 are both less than or equal to the opening radius 132r. There is a vector P1' pointing from the origin O to the center position of the selected opening A1', a vector P2' pointing from the origin O to the center position of the selected opening A2', a vector P3' pointing from the origin O to the center position of the selected opening A3', and a vector P4' pointing from the origin O to the center position of the selected opening A4'. The projection of the vector P1' on the horizontal axis X is P 1,x ', the projection of the vector P2' on the horizontal axis X is P 2,x ', the projection of the vector P3' on the horizontal axis X is P 3,x ', the projection of the vector P4' on the horizontal axis X is P 4,x '. Similarly, from the selected openings, two sets of adjacent selected openings are selected to calculate the difference in their projections on the horizontal axis X, and then the difference between the two is calculated. For example, one set selects the selected opening A1' and the adjacent selected opening A2', and the other set selects the selected opening A3' and the adjacent selected opening A4'. The difference between the projection P 1,x ' and the projection P 2,x ' is defined as the first projection difference ΔP 1,x ' ( Figure 4 represented by the difference d5 in), the difference between the projection P 3,x ' and the projection P 4,x ' is defined as the second projection difference ΔP 3,x ' ( Figure 4 represented by the difference d6 in), and, according to the design of the opening 132 of the present invention, the difference between the first projection difference ΔP 1,x ' and the second projection difference ΔP 3,x ' is greater than 20 microns, that is, the opening 132 of the present invention satisfies the design condition │ΔP 1,x ' – ΔP 3,x '│ > 20μm.

[0056] Similarly, in the selected opening sequence A' described above, each selected opening also satisfies the projection difference variation condition on the vertical axis Y. For example, the selected opening A1' and the adjacent selected opening A2' have projection amounts P 1,y ' and projection amount P 2,y ' respectively on the vertical axis Y, and there is a third projection difference ΔP 1,y ' ( Figure 4 represented by the difference d7 in 3,y ), the selected opening A3' and the adjacent selected opening A4' have projection amounts P 4,y ' and projection amount P 3,y ' respectively on the vertical axis Y, and there is a fourth projection difference ΔP Figure 4 ' ( 1,y represented by the difference d8 in 3,y ), and the difference between the third projection difference ΔP 1,y ' and the fourth projection difference ΔP 3,y ' is greater than 20 microns, that is, the opening 132 of the present invention satisfies the design condition │ΔP

[0057] Please refer to Figure 5 Figure 5 , Figure 5 which is another partial enlarged top view schematic diagram of the first embodiment of the hidden display of the present invention, showing another selection method of an opening sequence. As

[0058] shown, when selecting another opening sequence A", any two adjacent openings 132 (such as the selected opening A1" and the selected opening A2") on the decorative layer 130 can be selected as reference openings, and the extension line of the center connection line of these two adjacent openings 132 is set as the reference line RL3, and its extension direction is defined as the sequence direction Dr. Then, from multiple openings 132, several openings 132 adjacent to the reference line RL3 are selected as the opening sequence of this group, such as including the selected opening A1", the selected opening A2", the selected opening A3", the selected opening A4" and the selected opening A5", where the definition of "adjacent" means that the shortest vertical distance between the center of the opening 132 and the reference line RL3 is less than or equal to the opening radius 132r. Then, a first group of adjacent selected openings (such as but not limited to the selected opening A1" and the selected opening A2") and a second group of adjacent selected openings (such as but not limited to the selected opening A4" and the selected opening A5") can be selected from the opening sequence A", and the differences in the projections of the two groups of selected openings on any coordinate axis are calculated respectively, and the absolute value of the subtraction of the two differences is obtained, that is, the ΔP difference or the projection difference variation condition. And, according to the present invention, the ΔP difference between any two adjacent openings 132 of the opening sequence A" is greater than 20 μm.

[0058] The number of openings in the opening sequence selected by the present invention and the adopted sequence direction are not Figures 3 to 5The disclosure is limited thereto. Furthermore, when selecting the opening sequence, a linear reference line can be set in any direction on the decorative layer 130 as the sequence direction, and the selected openings are selected along this reference line. Therefore, the reference line is not limited to being parallel to the coordinate axes (the horizontal axis X or the vertical axis Y) in the coordinate system. For example, the reference line can have an angle greater than 0 degrees and less than 90 degrees with the coordinate axes, but it is not limited thereto. Furthermore, according to the present invention, in any selected opening sequence, the projection difference variation condition of any two adjacent selected openings is greater than 20 microns, that is, │ΔP i,x –ΔP j,x │>20μm and / or │ΔP i,y –ΔP j,y │>20μm.

[0059] Please refer to Figure 1 again. In the display panel 110 of the hidden display 100 of the present invention, the display area 110R where a plurality of sub-pixels PX are located is included. Among them, the sub-pixel PX is the smallest unit that the display panel 110 can use to independently output light. The size (or pitch) of the sub-pixel PX can be less than or equal to 20 microns. Corresponding to the size of the sub-pixel PX, the present invention provides a design in which the projection difference variation condition (ΔP difference) of the openings 132 is greater than 20 microns, so that the openings 132 in the decorative layer 130 are not completely equidistant from each other and have the above-mentioned special arrangement design, thereby improving the moiré problem in the displayed image and even effectively eliminating moiré. On the other hand, in another embodiment of the present invention, when the resolution of the display panel 110 is small, the pitch of the sub-pixels PX is large and greater than 20 microns, for example, greater than 30 microns, then the projection difference variation condition of the openings 132 in the decorative layer 130 is preferably greater than 30 microns, and this design can effectively eliminate moiré. According to the present invention, the ΔP difference is preferably greater than the size of the sub-pixel PX of the display panel 110, that is, the ΔP difference is preferably greater than the minimum pixel size, but it is not limited thereto.

[0060] Please refer to Figure 6 . Figure 6 is a schematic diagram of the display screens of the example and the comparative example of the hidden display of the present invention. As Figure 6 shown in the comparative example (i), when the hidden display is in the lit state, if the adjacent openings of the decorative layer have equal pitch or have a certain periodic distribution, for example, the ΔP difference is 0, the openings will be superimposed and interfered with the regularly arranged sub-pixels in the display, and the displayed screen will have moiré MO, affecting the quality of the displayed screen, for example, the image will be unclear. In contrast, please refer to the example (ii) of the present invention. According to the above-mentioned opening setting conditions of the present invention, that is, when the projection difference variation condition is greater than a specific value (for example, ΔP difference>20μm or ΔP difference>30μm), the screen displayed when the hidden display is lit has no moiré or has no obvious moiré.

[0061] Please refer to again Figure 3 Figure 3 , according to the present invention, the apertures 132 in the decorative layer 130 may have substantially the same size and shape. Although Figure 3 the apertures 132 shown are circular, in alternative embodiments, the apertures 132 may have other suitable shapes. Furthermore, in the decorative layer 130, the total area of the apertures 132 ranges from 20% to 50%, preferably from 20% to 30%, of the aperture ratio (i.e., the ratio of the aperture area) of the display area 110R of the display panel 110. If the aperture ratio is less than 20%, when the display panel 110 is lit, the overall display quality of the hidden display 100 will be affected because the total area of the apertures 132 is too small. The decorative pattern DC of the decorative layer 130 may block the display screen, or the user is easily disturbed by the decorative pattern DC when observing the image. If the aperture ratio is greater than 50%, the texture of the decorative pattern DC of the decorative layer 130 in the off or standby state of the display panel 110 will be affected, for example, the holes are easily visible. The aperture ratio can be defined by the number and area of the apertures 132 within each unit area range. By controlling the aperture ratio within the above range, the transmittance of the light EL generated by the display panel 110 can be uniformly controlled to improve the display quality. For example, within a unit area range of 500 microns x 500 microns, the aperture radius 132r of the apertures 132 ranges from 20 to 40 microns, and the number of apertures ranges from 10 to 100. With this design, the aperture ratio can be maintained within 20% to 50%.

[0062] Table 1 Examples of aperture radius, number of apertures, and aperture ratio

[0063]

[0064]

[0065] Table 1 is an example table of the aperture radius, number of apertures, and aperture ratio of the apertures in the decorative layer of the hidden display of the present invention. For example, when the aperture radius within the unit area (area) is 30 microns and the number of apertures is 27, the aperture ratio per unit area is approximately 31%. When the aperture ratio is controlled between 20 and 50% by the above parameters, a better display effect can be achieved. However, it should be noted that the aperture radius and the number of apertures are not limited to those listed in the above table.

[0066] Please refer to again Figure 1, the decorative layer 130 and the opening 132 can be made by any suitable process. For example, the decorative layer 130 can be made by printing, yellow light process, coating process or inkjet process, but not limited thereto. Specifically, in some embodiments, the printing process can use a stencil with a predetermined pattern to screen-print the decorative pattern DC onto the upper surface 120a of the transparent substrate 120 with inks of different colors. In this process, the printed decorative layer 130 will directly have the opening 132, that is, the ink will not be printed at the predetermined opening position. In some embodiments, if the yellow light process is used, a whole layer of decorative layer 130 with decorative pattern DC can be directly formed on the surface of the transparent substrate 120, and then part of the decorative layer 130 is removed by exposure, development and etching processes to form the opening 132 in the decorative layer 130. The advantage of the yellow light process is that it can precisely control the number, size and dimension of the opening 132. In some other embodiments, when the whole decorative layer 130 is made by the coating process, the opening 132 can be ablated in the decorative layer 130 by laser drilling. Laser drilling can precisely remove the ink material at the predetermined opening by controlling the energy of the laser beam to form the opening 132. In still some other embodiments, the decorative layer 130 can also be formed by inkjet, directly spraying the decorative pattern DC on the surface of the transparent substrate 120, and the ink will not be sprayed at the position where the opening 132 is predetermined to be set.

[0067] Furthermore, in Figure 1 the hidden display 100 shown, the display panel 110 can be a non-self-luminous display panel. For example, the display panel 110 includes a first substrate 112, a second substrate 114, a display medium layer 116 and a circuit layer 118. Among them, the second substrate 114 and the first substrate 112 are arranged opposite to each other, the display medium layer 116 is arranged between the first substrate 112 and the second substrate 114, and the circuit layer 118 is arranged on the surface of one of the first substrate 112 and the second substrate 114. Figure 1 Taking the circuit layer 118 being arranged on the inner surface of the first substrate 112 on the lower side as an example, but not limited thereto. The display medium layer 116 is, for example but not limited to, a liquid crystal layer, which can control the light output of each sub-pixel PX to display the picture accordingly. In addition, the display panel 110 can also include a light source 140 arranged on one side of the display panel 110. For example, the light source 140 can be a backlight module, arranged on the side of the display panel 110 opposite to the transparent substrate 120, but not limited thereto.

[0068] Please refer to Figure 7 , Figure 7Schematic partial cross-sectional view of a variant embodiment of the hidden display of the present invention. In this variant embodiment, the display panel 110 can be a self-emitting display panel, which includes a first substrate 112, a second substrate 114, a light-emitting layer 115, and a circuit layer 118. The light-emitting layer 115 is disposed between the first substrate 112 and the second substrate 114 and can be electrically connected to the circuit layer 118. The display panel 110 is, for example, an organic light-emitting display (OLED), and the light-emitting layer 115 can include organic light-emitting elements. The display panel 110 can also be an inorganic light-emitting display panel. The light-emitting layer 115 includes, for example, micro light-emitting diodes (μLEDs), but is not limited thereto. It should be noted that the type of the display panel 110 of the present invention is not limited to the above embodiments, and any suitable type of display panel can be used in the hidden display 100 of the present invention. Furthermore, the decorative layer 130 on the surface of the transparent substrate 120 has a plurality of openings 132, and the arrangement of the openings 132 can satisfy the aforementioned projection difference variation conditions, such as ΔP difference > 20 μm, ΔP difference > 30 μm, or the ΔP difference is greater than the maximum size of the sub-pixels of the display panel 110. In some other variant embodiments, the openings 132 can be arranged irregularly or randomly, that is, the intervals between adjacent openings 132 are not completely equal. It should be noted that Figure 1 and Figure 7 The structure of the hidden display 100 shown can be applied to various embodiments of the present invention and will not be described in detail.

[0069] Please refer to Figure 8 and Figure 9 , Figure 8 Schematic partial external view of the second embodiment of the hidden display of the present invention, Figure 9 Schematic partial external view of a variant embodiment of the second embodiment of the hidden display of the present invention. In this embodiment, the hidden display 100 is a curved display with an appropriate curvature. Among them, the display panel 110 included in the hidden display 100 and the transparent substrate 120 disposed on the display panel 110 can have a conformal curved surface structure, that is, both the display panel 110 and the transparent substrate 120 are curved surface structures. The curved surface is a two-dimensional curved surface in a three-dimensional space, especially, for example, a single-curvature curved surface, where the radius of curvature R is, for example, greater than 100 millimeters (mm), but is not limited thereto. The display surface of the hidden curved display of the present invention can be a concave surface or a convex surface. In Figure 8 the embodiment shown, the display surface of the hidden display 100 is a concave surface, that is, the concave surface faces the display side DS. In Figure 9In the illustrated variant embodiment, the display surface of the hidden display 100 is a convex surface, that is, the convex surface faces the display side DS. The distribution conditions of the openings 132 of the decorative layer 130 mentioned in the foregoing other embodiments can all be applied to the Figure 8 and Figure 9 embodiment or other embodiments, and will not be elaborated herein.

[0070] The hidden display of the present invention can be applied to an automobile or any device that desires to hide a display. The decorative layer on the surface of the hidden display has a predetermined decorative pattern. When the display panel does not display an image, the decorative pattern can hide the display panel and present an integrated appearance with the position where it is set. For example, the hidden display can be set on the vehicle center console or the glove box in front of the co-pilot seat. The vehicle interior can have a predetermined decorative pattern, and the decorative layer of the hidden display panel of the present invention can be matched with the interior to have a similar or identical decorative pattern. The decorative layer has a plurality of openings, and its configuration satisfies the foregoing projection difference variation conditions and the opening ratio. Under this design, when the display panel is lit, the displayed image can clearly appear through the decorative layer, and the decorative pattern will fade or even disappear, so that it will not affect visual information reading, and there is also no moiré pattern in the image. Therefore, it has good display quality and can fully display information.

[0071] The above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. A hidden display, characterized in that: include: a display panel; A transparent substrate, disposed on the display panel; A decorative layer is disposed on the surface of the transparent substrate, wherein the decorative layer includes a plurality of openings, wherein the distribution positions of the plurality of openings meet the following conditions: The multiple openings include a group of opening sequences distributed along a direction, the projections of the opening centers of two adjacent openings in the group of opening sequences on a coordinate axis have a first projection difference, the projections of the opening centers of another two adjacent openings in the group of opening sequences on the coordinate axis have a second projection difference, and the difference between the first projection difference and the second projection difference is greater than 20 microns.

2. The hidden display according to claim 1, characterized in that: The openings in the opening sequence group satisfy the following conditions: The openings in the opening sequence include two adjacent reference openings, an extension line of a line connecting the opening centers of the reference openings is defined as a reference line, and the reference line extends along the direction; as well as The shortest distances between the opening centers of the other openings in the opening sequence and the extension line are respectively less than or equal to the opening radius of the opening.

3. The hidden display according to claim 1, characterized in that: The coordinate axis belongs to a two-dimensional coordinate system, and the two-dimensional coordinate system also includes another coordinate axis, the projection of the hole centers of two adjacent holes in the group of openings in the opening sequence on the other coordinate axis has a third projection difference, and the projection of the hole centers of another two adjacent holes in the group of openings in the opening sequence on the other coordinate axis has a fourth projection difference, wherein the difference between the third projection difference and the fourth projection difference is greater than 20 microns.

4. The hidden display according to claim 1, characterized in that: The minimum pixel size of the display panel is less than or equal to 20 microns.

5. The hidden display according to claim 1, characterized in that: The minimum pixel size of the display panel is greater than 20 micrometers, and the difference between the first projection difference and the second projection difference is greater than the minimum pixel size.

6. The hidden display according to claim 1, characterized in that: The display panel has a display area, and the total area of ​​the openings has an opening ratio range of 20% to 50% of the display area.

7. The hidden display according to claim 1, characterized in that: The display panel has a display area, and the total area of ​​the openings has an opening ratio range of 20% to 30% of the display area.

8. The hidden display according to claim 1, characterized in that: The display panel includes: a first substrate; a second substrate, disposed opposite to the first substrate; a display medium layer, disposed between the first substrate and the second substrate; and A circuit layer is disposed on a surface of one of the first substrate and the second substrate.

9. The hidden display according to claim 8, characterized in that: The device also includes a light source, which is arranged on one side of the display panel.

10. The hidden display according to claim 1, characterized in that: The display panel includes: a first substrate; a second substrate, disposed opposite to the first substrate; a light-emitting layer disposed between the first substrate and the second substrate; and A circuit layer is disposed on a surface of one of the first substrate and the second substrate.

11. The hidden display according to claim 1, characterized in that: The display panel and the transparent substrate arranged on the display panel have a conformal curved surface structure.

12. The hidden display according to claim 1, characterized in that: The transparent substrate is located between the decoration layer and the display panel.

13. The hidden display according to claim 1, characterized in that: The decoration layer is located between the transparent substrate and the display panel.

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