Color electronic paper and manufacturing method thereof

Abstract

The present invention provides a color electronic paper and a method for making the same, comprising a TFT substrate, an electronic film layer arranged on the TFT substrate, and a color filter arranged on the electronic film layer; the TFT substrate is composed of a plurality of TFT pixels arranged in an arrangement, the first TFT pixel of each row of TFT pixels is staggered with the first TFT pixel of the adjacent row, and the TFT pixels of any row and the TFT pixels of the adjacent upper or lower row form a color display unit composed of three TFT pixels; corresponding to the color display unit, the color filter is provided with a corresponding color at a corresponding position. The present invention provides a color electronic paper, the color display unit of which only needs three TFT pixels to be composed, and the function of each TFT pixel can be fully utilized. Compared with the prior art, the effective resolution of the color electronic paper can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic paper display, and in particular to a color electronic paper and a manufacturing method thereof. Background Art

[0002] There are two main types of existing color electronic paper: the first type is electronic ink containing particles of multiple colors. This type of electronic paper with multiple color particles takes a long time to refresh and cannot quickly switch screens; the second type is electronic ink with only black and white particles, and a color filter is added to the electronic film layer to achieve a multi-color display. This type of electronic paper can achieve fast refresh and fast screen switching. Therefore, most of the reader products on the market currently use the second type of color electronic paper structure to achieve the corresponding functions.

[0003] For the second type of color electronic paper, the pixel arrangement of its TFT substrate can be seen in Figure 1 As shown, each pixel is generally square, and adjacent pixels are aligned up and down and left and right. The display principle can be seen in Figure 2 As shown. A color filter is added above the black and white electronic film layer, and three colors of RGB color glue are set on the color filter. The TFT substrate uses pixels as the basic unit to drive the black and white particles in the electronic film layer to absorb and reflect light to achieve different color displays. Different color glues need to be aligned with the pixels of the TFT substrate below to ensure display quality.

[0004] However, since the color filter glue needs to be matched with red / green / blue in a 1:1:1 ratio to achieve white balance, and the color unit pixels composed of red, green and blue need to be distributed in a concentrated manner, there are generally two arrangements of color filter glues available. For details, see Figure 3 and Figure 4 These two arrangements usually use 9 TFT substrate pixels as a unit and realize 3 pixels of red display, 3 pixels of green display and 3 pixels of blue display at a ratio of 1:1:1. This method requires 9 TFT substrate pixels to form a new color display unit, and its effective resolution is only 1 / 9 of the entire TFT substrate. This method cannot give full play to the role of each TFT substrate pixel, which seriously restricts the improvement of color electronic paper resolution. Summary of the invention

[0005] The present invention aims to provide a color electronic paper and a method for manufacturing the same, so as to solve the above-mentioned technical problems, give full play to the role of each TFT substrate pixel, and improve the effective resolution of the color electronic paper.

[0006] In order to solve the above technical problems, the present invention provides a color electronic paper, including a TFT substrate, an electronic film layer arranged on the TFT substrate, and a color filter arranged on the electronic film layer; the TFT substrate is composed of a plurality of TFT pixels arranged, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in an adjacent row, and the TFT pixels in any row and the adjacent upper or lower rows of TFT pixels form a color display unit composed of three TFT pixels; corresponding to the color display unit, the color filter is set with a corresponding color at a corresponding position.

[0007] The color electronic paper provided by the above solution has a color display unit that only requires three TFT pixels to form, which can give full play to the role of each TFT pixel. Compared with the existing technology, it improves the effective resolution of the color electronic paper.

[0008] Furthermore, on the TFT substrate, the first TFT pixel in each row of TFT pixels is offset from the first TFT pixel in the adjacent row by 1 / 3 to 2 / 3 of the TFT pixels. In this offset mode, the arrangement of all TFT pixels is still tight, and the normal display of the color electronic paper is not affected. This improves the error tolerance of the TFT pixel position setting, making the design of the TFT substrate more flexible.

[0009] Furthermore, the first TFT pixel in each row of TFT pixels is offset by 1 / 2 TFT pixel from the first TFT pixel in the adjacent row. In this offset mode, the three TFT pixels in the color display unit are distributed in a triangle shape, so that the three RGB pixels are more concentrated, the uniformity of color display is improved, and the performance of the TFT substrate is guaranteed.

[0010] Furthermore, the positions of the first TFT pixels of the odd-numbered rows are aligned, and the positions of the first TFT pixels of the even-numbered rows are aligned. This arrangement ensures the concentration of the TFT pixels on the TFT substrate, which on the one hand makes the three RGB pixels more concentrated and improves the uniformity of color display, and on the other hand improves the utilization rate of the TFT substrate space.

[0011] Furthermore, the color filter is provided with a corresponding color at a corresponding position corresponding to the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel.

[0012] The present invention also provides a method for manufacturing color electronic paper, comprising the following steps:

[0013] Provide a TFT substrate;

[0014] preparing an electronic film layer on a TFT substrate;

[0015] A color filter is arranged on the electronic film layer;

[0016] The TFT substrate is composed of a plurality of TFT pixels arranged in an array. When the TFT substrate is arranged, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row. The TFT pixels in any row and the TFT pixels in the adjacent upper or lower row form a color display unit composed of three TFT pixels.

[0017] When a color filter is provided on the electronic film layer, a corresponding color is provided for the color filter corresponding to the position of the color display unit.

[0018] The color electronic paper manufactured by the above method has a color display unit composed of only three TFT pixels, which can give full play to the role of each TFT pixel. Compared with the prior art, it improves the effective resolution of the color electronic paper.

[0019] Furthermore, when setting the TFT substrate, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row by 1 / 3 to 2 / 3 of the TFT pixels. In this staggered manner, the arrangement between all TFT pixels is still tight, and the normal display of the color electronic paper is not affected. This improves the error tolerance of the TFT pixel position setting and makes the design of the TFT substrate more flexible.

[0020] Furthermore, when setting the TFT substrate, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row by 1 / 2 TFT pixel. In this staggered manner, the three TFT pixels in the color display unit are distributed in a triangle shape, so that the three RGB pixels are more concentrated, the uniformity of color display is improved, and the performance of the TFT substrate is guaranteed.

[0021] Furthermore, when the TFT substrate is provided, the following steps are also included:

[0022] The positions of the first TFT pixels of the odd-numbered rows are aligned, and the positions of the first TFT pixels of the even-numbered rows are aligned.

[0023] The above steps can ensure the concentration of TFT pixels on the FT substrate. On the one hand, the three RGB pixels are more concentrated, improving the uniformity of color display, and on the other hand, the utilization rate of the TFT substrate space is improved.

[0024] Furthermore, when a color filter is provided on the electronic film layer, a corresponding color is provided for the color filter corresponding to the position of the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A schematic diagram of pixel arrangement of a TFT substrate provided as the background technology of the present invention;

[0026] Figure 2 A schematic diagram of the display principle of color electronic paper provided as the background technology of the present invention;

[0027] Figure 3 A schematic diagram of a color filter color glue arrangement method provided as the background technology of the present invention;

[0028] Figure 4 A second schematic diagram of the arrangement of color filter color glue provided as the background technology of the present invention;

[0029] Figure 5 A schematic diagram of pixel distribution of a TFT substrate of a color electronic paper provided by an embodiment of the invention;

[0030] Figure 6 A schematic diagram of a 1 / 3 pixel staggered distribution of a TFT substrate of a color electronic paper provided by an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of a 2 / 3 pixel staggered distribution of a TFT substrate of a color electronic paper provided by an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the distribution of misaligned pixel rows and rows on a TFT substrate of a color electronic paper provided by an embodiment of the present invention;

[0033] Fig. 9 A schematic flow chart of a method for manufacturing color electronic paper provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make each TFT pixel in the drawings more distinguishable, the TFT pixels are combined with their corresponding colors in the color filter glue in the drawings. The color setting is optional and cannot be interpreted as the only option for the TFT pixel color.

[0036] See also Figure 5The present embodiment provides a color electronic paper, comprising a TFT substrate, an electronic film layer arranged on the TFT substrate, and a color filter arranged on the electronic film layer; the TFT substrate is composed of a plurality of TFT pixels arranged in an array, the first TFT pixel of each row of TFT pixels is staggered with the first TFT pixel of the adjacent row, and the TFT pixels of any row and the adjacent TFT pixels of the upper or lower row form a color display unit composed of three TFT pixels; corresponding to the color display unit (see Figure 5 The color filter sets the corresponding color at the corresponding position.

[0037] The color electronic paper provided in this embodiment has a color display unit that only requires three TFT pixels. Compared with the prior art, the function of each TFT pixel can be fully utilized, and the effective resolution of the color electronic paper is increased by 3 times.

[0038] It should be noted that the TFT pixels in any row and the TFT pixels in the adjacent upper or lower row form a color display unit consisting of three TFT pixels, specifically:

[0039] For the TFT pixels in the first row, if they are adjacent to only the lower row, then the color display unit must be generated in the combination of the TFT pixels in the first row and the second row. If two TFT pixels are provided in the first color display unit, then in the second color display unit, two TFT pixels are provided by the second row, so that the two rows of TFT pixels can completely form several color display units. For the TFT pixels in the last row, if they are adjacent to only the upper row, then the color display unit must be generated in the combination of the TFT pixels in the last row and the second to last row. For the TFT pixels in other rows, similarly, they are sequentially allocated to form color display units according to the corresponding combination of the first row or the last row to ensure that there are no redundant TFT pixels. The specific number of rows can be set according to actual needs, and will not be elaborated here.

[0040] Furthermore, on the TFT substrate, the first TFT pixel in each row of TFT pixels is offset from the first TFT pixel in the adjacent row by 1 / 3 to 2 / 3 of the TFT pixels. Figure 6 , Figure 7 In this staggered mode, the arrangement of all TFT pixels is still tight and does not affect the normal display of color electronic paper. It improves the fault tolerance of TFT pixel position setting and makes the design of TFT substrate more flexible.

[0041] Furthermore, the first TFT pixel in each row of TFT pixels is offset from the first TFT pixel in the adjacent row by 1 / 2 TFT pixel. Figure 5 As shown, compared to Figure 6 , Figure 7In this staggered arrangement, the three TFT pixels in the color display unit are distributed in a triangular shape, making the three RGB pixels more concentrated, improving the uniformity of color display, and ensuring the performance of the TFT substrate.

[0042] Further, see Figure 8 As shown, if the positions of the first TFT pixels of the odd / even rows of TFT pixels are not aligned, there will be a lot of idle space under the entire TFT substrate arrangement that is not fully utilized. Therefore, when setting the TFT substrate in this embodiment, the positions of the first TFT pixels of the odd rows of TFT pixels are aligned, and the positions of the first TFT pixels of the even rows of TFT pixels are aligned. The structure can be seen in Figure 5 This setting method ensures the concentration of TFT pixels on the TFT substrate. On the one hand, it makes the three RGB pixels more concentrated and improves the uniformity of color display. On the other hand, it improves the utilization rate of the TFT substrate space.

[0043] Furthermore, the color filter is provided with a corresponding color at a corresponding position corresponding to the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel.

[0044] See also Fig. 9 This embodiment provides a method for manufacturing a color electronic paper, comprising the following steps:

[0045] S1: Setting a TFT substrate, wherein the TFT substrate is composed of a plurality of TFT pixels arranged in an array; when setting the TFT substrate, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in an adjacent row, and the TFT pixels in any row and the adjacent TFT pixels in the upper or lower row form a color display unit composed of three TFT pixels;

[0046] S2: preparing an electronic film layer on a TFT substrate;

[0047] S3: a color filter is arranged on the electronic film layer, and a corresponding color is set for the color filter corresponding to the position of the color display unit.

[0048] The color electronic paper manufactured by the method provided in this embodiment has a color display unit composed of only three TFT pixels, which can give full play to the role of each TFT pixel. Compared with the prior art, the effective resolution of the color electronic paper is improved.

[0049] Furthermore, when setting the TFT substrate, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row by 1 / 3 to 2 / 3 of the TFT pixels. In this staggered manner, the arrangement between all TFT pixels is still tight, and the normal display of the color electronic paper is not affected. This improves the error tolerance of the TFT pixel position setting and makes the design of the TFT substrate more flexible.

[0050] Furthermore, when setting the TFT substrate, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row by 1 / 2 TFT pixel. In this staggered manner, the three TFT pixels in the color display unit are distributed in a triangle shape, so that the three RGB pixels are more concentrated, the uniformity of color display is improved, and the performance of the TFT substrate is guaranteed.

[0051] Furthermore, when the TFT substrate is provided, the following steps are also included:

[0052] The positions of the first TFT pixels of the odd-numbered rows are aligned, and the positions of the first TFT pixels of the even-numbered rows are aligned.

[0053] The above steps can ensure the concentration of TFT pixels on the FT substrate. On the one hand, the three RGB pixels are more concentrated, improving the uniformity of color display, and on the other hand, the utilization rate of the TFT substrate space is improved.

[0054] Furthermore, when a color filter is provided on the electronic film layer, a corresponding color is provided for the color filter corresponding to the position of the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel.

[0055] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A color electronic paper, comprising a TFT substrate, an electronic film layer disposed on the TFT substrate, and a color filter disposed on the electronic film layer; characterized in that: The TFT substrate is composed of a plurality of TFT pixels arranged in an arrangement, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in an adjacent row, and the TFT pixels in any row and the adjacent upper or lower rows of TFT pixels form a color display unit composed of three TFT pixels; corresponding to the color display unit, the color filter is set with a corresponding color at a corresponding position.

2. A color electronic paper according to claim 1, characterized in that: On the TFT substrate, the first TFT pixel in each row of TFT pixels is offset from the first TFT pixel in an adjacent row by 1 / 3 to 2 / 3 of the TFT pixels.

3. The color electronic paper according to claim 2, characterized in that: On the TFT substrate, the first TFT pixel in each row of TFT pixels is offset from the first TFT pixel in an adjacent row by 1 / 2 TFT pixel.

4. The color electronic paper according to claim 1, characterized in that: On the TFT substrate, the positions of the first TFT pixels in the odd-numbered rows of TFT pixels are aligned, and the positions of the first TFT pixels in the even-numbered rows of TFT pixels are aligned.

5. A color electronic paper according to any one of claims 1 to 4, characterized in that: The color filter is provided with a corresponding color at a corresponding position corresponding to the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel.

6. A method for making a color electronic paper, comprising the following steps: Provide a TFT substrate; preparing an electronic film layer on a TFT substrate; A color filter is arranged on the electronic film layer; the characteristics are: The TFT substrate is composed of a plurality of TFT pixels arranged in an array. When the TFT substrate is arranged, the first TFT pixel in each row of TFT pixels is staggered with the first TFT pixel in the adjacent row. The TFT pixels in any row and the TFT pixels in the adjacent upper or lower row form a color display unit composed of three TFT pixels. When a color filter is provided on the electronic film layer, a corresponding color is provided for the color filter corresponding to the position of the color display unit.

7. The method for manufacturing color electronic paper according to claim 6, characterized in that: When the TFT substrate is arranged, the first TFT pixel in each row of TFT pixels is arranged to be offset by 1 / 3 to 2 / 3 of the first TFT pixel in the adjacent row.

8. The method for making a color electronic paper according to claim 7, characterized in that: When the TFT substrate is arranged, the first TFT pixel in each row of TFT pixels is arranged to be staggered by 1 / 2 TFT pixel with the first TFT pixel in the adjacent row.

9. The method for manufacturing color electronic paper according to claim 6, characterized in that: When setting the TFT substrate, the following steps are also included: The positions of the first TFT pixels of the odd-numbered rows are aligned, and the positions of the first TFT pixels of the even-numbered rows are aligned.

10. A method for manufacturing color electronic paper according to any one of claims 6 to 9, characterized in that: When a color filter is provided on the electronic film layer, a corresponding color is provided for the color filter corresponding to the position of the color display unit, so that the color corresponding to the current TFT pixel is different from the color of its adjacent TFT pixel.

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