Polaroid structure for improving contrast ratio, segment code screen and display device

Abstract

The utility model discloses a polaroid structure for improving contrast, which is used in a segment code screen, and the segment code screen comprises a plurality of segment code patterns capable of being displayed independently. The polaroid structure comprises a plurality of brightening microlens arrays, and one brightening microlens array corresponds to one segment code pattern. The polaroid structure can improve the contrast ratio of the segment code screen. The utility model further provides a segment code screen and a display device. The segment code screen and the display device comprise the lower polaroid adopting the polaroid structure.

Description

Technical Field

[0001] The utility model relates to display technology, in particular to a polarizer structure, a segment code screen and a display device for improving contrast. Background Art

[0002] Segment LCD, also known as Segment LCD, is a common LCD screen, mainly used to display numbers and some letters. Compared with traditional dot matrix LCD, segment screen has lower display resolution, but relatively lower cost and less power consumption. Segment screen is widely used in devices with fixed display patterns such as watches, instruments and central control panels.

[0003] The contrast of the segment code screen is an important indicator to measure the display effect of the segment code screen. It is usually used to describe the clarity of the displayed content. The higher the contrast, the darker the non-display area of ​​the segment code screen, and the whiter and brighter the segment code pattern, making the displayed image or text clearer and more vivid.

[0004] However, the contrast of traditional segment code screens is not high, especially in strong light environments, the display effect will be greatly affected. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a polarizing film structure, which can improve the contrast of the segment code screen.

[0006] The utility model also provides a segment code screen and a display device, comprising a lower polarizer adopting the above polarizer structure.

[0007] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0008] A polarizer structure for improving contrast is used in a segment code screen, wherein the segment code screen comprises a plurality of segment code patterns that can be displayed independently; the polarizer structure comprises a plurality of brightness enhancement micro lens arrays, wherein one brightness enhancement micro lens array corresponds to one segment code pattern.

[0009] Furthermore, the edge of each brightness enhancement microlens array exceeds the corresponding segment pattern.

[0010] Furthermore, the edge of each brightness enhancement microlens array exceeds the range of the corresponding segment pattern by 15-25 μm.

[0011] Furthermore, the polarizer structure includes a supporting film layer, a polarizing film layer, a surface film layer and an adhesive layer, the polarizing film layer is arranged on one side surface of the supporting film layer, the adhesive layer is arranged on the other side surface of the supporting film layer, and the surface film layer is arranged on the side surface of the polarizing film layer facing away from the supporting film layer; the brightness enhancing microlens array is formed on the side surface of the surface film layer facing away from the polarizing film layer.

[0012] Furthermore, at least one of the supporting film layer and the surface film layer is a triacetyl cellulose film.

[0013] Furthermore, the polarizing film layer is a polyvinyl alcohol film.

[0014] Furthermore, the adhesive layer is a pressure-sensitive adhesive.

[0015] A segment code screen comprises an upper polarizer, an upper substrate, a lower substrate and a lower polarizer which are stacked in sequence, wherein the lower polarizer adopts the above-mentioned polarizer structure.

[0016] Furthermore, an electrode layer is provided on the surface of the lower substrate facing the upper substrate, and the electrode layer includes a plurality of driving electrode patterns. A light-shielding layer is provided on the surface of the upper substrate facing the lower substrate, and the light-shielding layer includes a plurality of light-transmitting hollow patterns, and one driving electrode pattern corresponds to one light-transmitting hollow pattern; the segment code pattern is formed between the corresponding driving electrode patterns and the light hollow patterns.

[0017] A display device comprises a backlight module and the above-mentioned segment code screen, wherein the segment code screen is arranged on the light emitting surface of the backlight module, and the lower polarizer faces the backlight module.

[0018] The utility model has the following beneficial effects: the polarizer structure of the utility model arranges a plurality of brightening microlens arrays corresponding to the various segment patterns of the segment code screen on its surface, and each brightening microlens array can improve the display brightness of each segment pattern of the segment code screen, making each segment pattern of the segment code screen whiter and brighter, while keeping the darkness and black of the segment code screen in the non-display area outside each segment code pattern unchanged, thereby improving the contrast of the segment code screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front structural schematic diagram of the segment code screen provided by the utility model.

[0020] Figure 2 This is a schematic diagram of the front structure of the polarizer structure provided by the utility model.

[0021] Figure 3This is a schematic diagram of the stacking structure of the polarizer structure and the segment code screen provided by the utility model.

[0022] Figure 4 This is a schematic diagram of the stacking structure of the polarizer structure provided by the utility model.

[0023] Figure 5 This is a schematic diagram of the stacking structure of the segment code screen provided by the utility model.

[0024] Figure 6 This is a schematic diagram of the stacking structure of the display device provided by the utility model. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] like Figure 2 As shown, a polarizer structure 200 for improving contrast is used as follows Figure 1 In the segment code screen 10 shown, the segment code screen 10 includes a plurality of segment code patterns 101 that can be displayed independently; the polarizer structure 200 includes a plurality of brightness enhancement micro lens arrays 201 , and one brightness enhancement micro lens array 201 corresponds to one segment code pattern 101 .

[0031] The polarizer structure 200 of the utility model is provided with a plurality of brightening microlens arrays 201 corresponding to the respective segment patterns 101 of the segment code screen 10 on its surface. Each brightening microlens array 201 can improve the display brightness of each segment pattern 101 of the segment code screen 10, making each segment pattern 101 of the segment code screen 10 whiter and brighter, while keeping the darkness and black of the segment code screen 10 in the non-display area outside each segment code pattern 101 unchanged, thereby improving the contrast of the segment code screen 10.

[0032] The brightness enhancement microlens array 201 may be an array composed of microlenses with a triangular, quadrilateral, hexagonal or arc-shaped cross section.

[0033] Preferably, Figure 3 As shown, the edge of each brightness enhancement microlens array 201 exceeds the corresponding segment pattern 101, so as to refract the backlight rays on the periphery of each segment pattern 101 and then make them incident into each segment pattern 101, thereby improving the utilization rate of the backlight rays.

[0034] In this embodiment, the edge of each brightness enhancement microlens array 201 exceeds the corresponding segment pattern 101 by a range D of 15-25 μm.

[0035] like Figure 4 As shown, the polarizer structure 200 includes a supporting film layer 210, a polarizing film layer 220, a surface film layer 230 and an adhesive layer 240, wherein the polarizing film layer 220 is arranged on one side surface of the supporting film layer 210, the adhesive layer 240 is arranged on the other side surface of the supporting film layer 210, and the surface film layer 230 is arranged on the side surface of the polarizing film layer 220 facing away from the supporting film layer 210; the brightness enhancing microlens array 201 is formed on the side surface of the surface film layer 230 facing away from the polarizing film layer 220.

[0036] In this embodiment, at least one of the supporting film layer 210 and the surface film layer 230 is a triacetyl cellulose film, the polarizing film layer 220 is a polyvinyl alcohol film, and the adhesive layer 240 is a pressure-sensitive adhesive.

[0037] The polarizer structure 200 further includes a release film layer 250 , which is disposed on a surface of the adhesive layer 240 that is away from the supporting film layer 210 .

[0038] The release film layer 250 is used to protect the adhesive layer 240 to prevent the adhesive layer 240 from being contaminated by dust, fingerprints, etc. before the polarizer structure 200 and the segment code screen 10 are attached. The release film layer 250 needs to be torn off before the polarizer structure 200 and the segment code screen 10 are attached.

[0039] Embodiment 2

[0040] like Figure 5 As shown, a segment code screen 10 includes an upper polarizer 11, an upper substrate 12, a lower substrate 13 and a lower polarizer 14 which are stacked in sequence. The lower polarizer 14 adopts the polarizer structure 200 described in the first embodiment.

[0041] The segment code screen 10 of the utility model is provided with a plurality of brightening microlens arrays 201 corresponding to each segment code pattern 101 of the segment code screen 10 on the surface of the lower polarizer 14. Each brightening microlens array 201 can improve the display brightness of each segment code pattern 101 of the segment code screen 10, making each segment code pattern 101 of the segment code screen 10 whiter and brighter, while keeping the darkness and black of the segment code screen 10 in the non-display area outside each segment code pattern 101 unchanged, thereby improving the contrast of the segment code screen 10.

[0042] An electrode layer 15 is provided on the surface of the lower substrate 13 on the side facing the upper substrate 12, and the electrode layer 15 includes a plurality of driving electrode patterns 151. A light-shielding layer 16 is provided on the surface of the upper substrate 12 on the side facing the lower substrate 13, and the light-shielding layer 16 includes a plurality of light-transmitting hollow patterns 161, and one driving electrode pattern 151 corresponds to one light-transmitting hollow pattern 161; the segment code pattern 101 is formed between the corresponding driving electrode patterns 151 and the light hollow patterns.

[0043] The light shielding layer 16 is used to shield the non-display area of ​​the segment code screen 10 outside each segment code pattern 101 to provide a background color for the non-display area of ​​the segment code screen 10 .

[0044] Preferably, the light shielding layer 16 is black ink, and its OD value (absorbance) should be guaranteed to be above 4 to meet the light shielding effect. The thickness of the light shielding layer 16 is between 1.5-1.9 μm, and the number of layers is at least two. If the light shielding property of the material of the light shielding layer 16 is low, the thickness of the light shielding layer 16 can be appropriately increased. If the light shielding property of the material of the light shielding layer 16 is high, the thickness of the light shielding layer 16 can be appropriately reduced, and it should not be limited to this.

[0045] The black ink uses carbon black as a colorant, which is doped and mixed in an ink base material and formed on the surface of the upper substrate 12 through a silk screen printing process. It has the characteristics of high density, high viscosity, high covering power, etc. It has good printability and can be printed on various substrates. It also has good weather resistance and durability.

[0046] At least one of the upper substrate 12 and the lower substrate 13 is a glass substrate, a plastic substrate, a sapphire substrate, or the like.

[0047] Embodiment 3

[0048] like Figure 6 As shown, a display device includes a backlight module 20 and the segment code screen 10 described in the second embodiment. The segment code screen 10 is arranged on the light emitting surface of the backlight module 20, and the lower polarizer 14 faces the backlight module 20.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A polarizer structure for improving contrast, used in a segment code screen, wherein the segment code screen includes a plurality of segment code patterns that can be displayed independently; characterized in that: The polarizer structure includes a plurality of brightness enhancement micro lens arrays, and one brightness enhancement micro lens array corresponds to one segment code pattern.

2. The polarizer structure according to claim 1, characterized in that: The edge of each brightness enhancement microlens array exceeds the corresponding segment pattern.

3. The polarizer structure according to claim 2, characterized in that: The edge of each brightness enhancement microlens array exceeds the corresponding segment pattern by 15-25 μm.

4. The polarizer structure according to claim 1, characterized in that: The polarizer structure includes a supporting film layer, a polarizing film layer, a surface film layer and an adhesive layer, wherein the polarizing film layer is arranged on one side surface of the supporting film layer, the adhesive layer is arranged on the other side surface of the supporting film layer, and the surface film layer is arranged on the side surface of the polarizing film layer facing away from the supporting film layer; the brightness enhancing microlens array is formed on the side surface of the surface film layer facing away from the polarizing film layer.

5. The polarizer structure according to claim 4, characterized in that: At least one of the supporting film layer and the surface film layer is a triacetyl cellulose film.

6. The polarizer structure according to claim 4, characterized in that: The polarizing film layer is a polyvinyl alcohol film.

7. The polarizer structure according to claim 4, characterized in that: The adhesive layer is a pressure-sensitive adhesive.

8. A segment code screen, comprising an upper polarizer, an upper substrate, a lower substrate and a lower polarizer stacked in sequence, characterized in that: The lower polarizer adopts the polarizer structure described in any one of claims 1-7.

9. The segment code screen according to claim 8, characterized in that: An electrode layer is provided on the surface of the lower substrate facing the upper substrate, and the electrode layer includes a plurality of driving electrode patterns. A light-shielding layer is provided on the surface of the upper substrate facing the lower substrate, and the light-shielding layer includes a plurality of light-transmitting hollow patterns, and one driving electrode pattern corresponds to one light-transmitting hollow pattern; the segment code pattern is formed between the corresponding driving electrode patterns and the light hollow patterns.

10. A display device, characterized in that: It comprises a backlight module and the segment code screen as claimed in claim 9, wherein the segment code screen is arranged on the light emitting surface of the backlight module, and the lower polarizer faces the backlight module.

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