Patent Description:
As shown in <FIG>, an existing DES panel mainly includes a glass substrate, a filter, a reflective layer microstructure, and an indium tin oxide (ITO) layer from top to bottom. The reflective layer microstructure is uniformly arranged on the color filter. Due to different requirements for color saturation and different thicknesses of filters of different colors, the DES panel has a nonuniform electric field, poor pressure resistance, a short refresh life, a fuzzy display effect, and poor color saturation.

Therefore, how to improve the refresh life, reduce diffraction, improve the display effect and the pressure resistance of the panel, and strengthen the uniformity of the electric field has become a technical problem to be resolved by those skilled in the art. <CIT> discloses a display plasma module. The display plasma module comprises a first substrate and a second substrate, the first substrate and the second substrate are oppositely arranged. A plasma filling area is formed between the first substrate and the second substrate; a pixel electrode layer is arranged on the surface of the first substrate; a light filtering layer is arranged on the surface of the second substrate; a reflecting layer is arranged on the surface of the light filtering layer; the reflecting layer comprises a plurality of reflecting layer microstructures which are arranged at intervals; a supporting structure is arranged in the plasma filling area, the supporting structure makes contact with and is tangent to the surface of the light filtering layer and the surface of the pixel electrode layer, the plasma filling area is filled with plasma particles, the pixel electrode layer is provided with a plasma isolation structure extending in the direction of the light filtering layer, and the height of the plasma isolation structure is not larger than that of the supporting structure.

To overcome the above drawbacks in the prior art, the present invention provides a DES panel with a new structure to resolve the problems in related technologies, such as a nonuniform electric field, a short refresh life, a fuzzy display effect, and poor color saturation of the DES panel due to an unsmooth surface of a color filter.

The invention is directed to a DES panel as recited in appended independent claim <NUM>. Other aspects of the invention are recited in the appended dependent claims.

The DES panel with a new structure in the present disclosure has the following advantages:
In the DES panel provided in the present disclosure, one OC layer is disposed between the gaps of the color filters to achieve a smooth surface of the upper substrate. The ITO film is attached to achieve a uniform electric field between the upper and lower substrates of the DES panel, improve a refresh life and a contrast of the DES panel, reduce diffraction, increase color saturation of the DES panel, and improve pressure resistance of the DES panel.

The accompanying drawings are provided for further understanding of the present disclosure and constitute part of the specification. The accompanying drawings and the following specific implementations of the present disclosure are intended to explain the present disclosure, rather than to limit the present disclosure.

Reference numerals: <NUM>: upper substrate; <NUM>: filter layer; <NUM>: OC layer; <NUM>: ITO film; <NUM>: reflective layer; <NUM>: OCA layer; <NUM>: reflective layer microstructure; <NUM>: lower substrate; <NUM>: pixel electrode layer; <NUM>: pixel electrode; <NUM>: electronic slurry barrier weir; <NUM>: electronic slurry flow vent; <NUM>: DES cavity; <NUM>: white electronic slurry particle; <NUM>: black electronic slurry particle; <NUM>: support structure.

To further describe the adopted technical means and the effects of the present disclosure to achieve the intended purpose of the present disclosure, the following describes a DES panel with a new structure in the present disclosure, and specific implementations, structures, features, and effects thereof in detail by referring to the accompanying drawings and preferred embodiments. The described embodiments are a part of, but not all of, the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

As shown in <FIG>, a DES panel includes a DES module. The DES module includes upper substrate <NUM> and lower substrate <NUM> opposite to the upper substrate <NUM>, and DES cavity <NUM> is formed between the upper substrate <NUM> and the lower substrate <NUM>. The DES cavity <NUM> is filled with electronic slurry particles.

Filter layer <NUM> is disposed on a surface of the upper substrate <NUM> facing the lower substrate <NUM>, and pixel electrode layer <NUM> is disposed on a surface of the lower substrate <NUM> facing the upper substrate <NUM>.

The DES cavity <NUM> is provided with support structure <NUM>. ITO film <NUM> is disposed between the support structure <NUM> and the filter layer <NUM>. A lower surface of the ITO film <NUM> is in contact with an upper surface of the support structure <NUM>, and a lower surface of the support structure <NUM> is in contact with an upper surface of the pixel electrode layer <NUM>.

The filter layer <NUM> includes a plurality of color filters. OC layer <NUM> is disposed between the gaps of the color filters, and the filter layer <NUM> is attached to an upper surface of the ITO film <NUM> by using OCA layer <NUM>. The OCA layer is made of OCA, which is a kind of special optically transparent substrate-free double-sided adhesive.

Specifically, a surface of the filter layer <NUM> facing the pixel electrode layer <NUM> is provided with reflective layers <NUM> at intervals, and the reflective layers <NUM> are located between the filter layer <NUM> and the ITO film <NUM>. Preferably, the sheet resistance of the ITO film <NUM> is <NUM>Ω, and the thickness is <NUM>. The OC layer <NUM> is made of liquid silica or liquid polyimide. The ITO film is an n-type semiconductor material with high conductivity, high visible light transmittance, high mechanical hardness, and good chemical stability.

The reflective layers <NUM> include a plurality of hemispherical reflective layer microstructures <NUM> disposed at intervals, and the reflective layer microstructures <NUM> have the same diameter. The reflective layer microstructures <NUM> are disposed at intervals, which significantly enhances the reflection brightness of white electronic slurry particle <NUM> of the DES panel, improves contrast, increases color saturation of the DES panel, and achieves an anti-reflection effect.

The support structure <NUM> includes a support microsphere, and the support microsphere is separately in contact with and tangent to the lower surface of the ITO film <NUM> and the upper surface of the pixel electrode layer <NUM>. The support microsphere mainly plays a supporting and fixing role to improve the pressure resistance of the DES panel, such that an image will not be blurred or deformed when the DES panel is pressed in a display process, thereby improving the stability of the displayed image.

The pixel electrode layer <NUM> includes a plurality of pixel electrodes <NUM> arranged in an array. A gap is formed between two adjacent ones of the pixel electrodes <NUM>. Electronic slurry barrier weir <NUM> is formed in the gap, and electronic slurry flow vent <NUM> is formed between the electronic slurry barrier weir <NUM> and the ITO film <NUM>.

The lower substrate <NUM> is a TFT glass substrate, and the electronic slurry particles filled in the DES cavity <NUM> include the white particle <NUM> and black particle <NUM>.

The electronic slurry barrier weir <NUM> is a trapezoidal structure extending from the pixel electrode layer <NUM> to the filter layer <NUM>.

It should be understood that the electronic slurry barrier weir <NUM> is mainly used to isolate the electronic slurry particles.

In the DES panel provided in the present disclosure, one OC layer is coated between the gaps of the color filters to achieve a smooth surface of the upper substrate, and the ITO film is attached by using the OCA to achieve a uniform electric field between the upper and lower substrates of the DES panel, improve a refresh life and a contrast of the DES panel, reduce diffraction, increase color saturation of the DES panel, and improve the pressure resistance of the DES panel.

It should be noted that the reflective layer microstructures <NUM> may be arranged in a staggered lattice, or arranged sequentially in horizontal and vertical lattices. The arrangement of the reflective layer microstructure <NUM> is not limited to the present disclosure.

It should be noted that the reflective layer microstructure <NUM> is not disposed in the gap between ITO layers <NUM> corresponding to adjacent color filters.

A manufacturing process of the DES panel with a new structure in the present disclosure is specifically as follows: First, a color filter layer is coated on the upper glass substrate to form color lumps of different colors, and one OC layer is coated between gaps of the color lumps to make the surface of the upper substrate smooth. The reflective layer microstructure <NUM> may be formed through spin coating, optical etching, thermal curing, or light curing. Finally, the ITO film is attached by using the OCA to complete the manufacturing of the upper substrate. When the DES panel is black and white, it is unnecessary to add the color filter, and the OC layer and the reflective microstructure may be added or not. A display electronic slurry and the support microsphere are disposed between the upper substrate and the lower substrate, and the electronic slurry barrier weir <NUM> is disposed on the lower substrate.

Preferably, the color lumps are not limited to red, green, and blue (RGB) lumps.

Preferably, the OC layer <NUM> is evaporated onto the lower surface of the color filter layer, which can enhance the smoothness of the color filter layer, adjust the smoothness of the electric field of the DES panel, and maintain the uniformity of the electric field. Alternatively, the OC layer is not disposed.

In this embodiment, the DES panel with a new structure may specifically be a microcapsule or microcup electronic paper display, a bistable reflective liquid crystal display (LCD), or an LCD.

As shown in <FIG>, a DES panel includes a DES module. The DES module includes upper substrate <NUM> and lower substrate <NUM> opposite to the upper substrate <NUM>. DES cavity <NUM> is formed between the upper substrate <NUM> and the lower substrate <NUM>, and the DES cavity <NUM> is filled with electronic slurry particles.

The DES cavity <NUM> is provided with support structure <NUM>; ITO film <NUM> is disposed between the support structure <NUM> and the filter layer <NUM>. A lower surface of the ITO film <NUM> is in contact with an upper surface of the support structure <NUM>, and a lower surface of the support structure <NUM> is in contact with an upper surface of the pixel electrode layer <NUM>.

The filter layer <NUM> includes a plurality of color filters. OC layer <NUM> is coated between the gaps of the color filters, and then the filter layer <NUM> is attached to an upper surface of the ITO film <NUM> by using OCA layer <NUM>.

Specifically, the support structure <NUM> includes a support microsphere, and the support microsphere is separately in contact with and tangent to the lower surface of the ITO film <NUM> and the upper surface of the pixel electrode layer <NUM>.

The lower substrate <NUM> is a TFT glass substrate, and the electronic slurry particles filled in the DES cavity <NUM> include white particles <NUM> and black particles <NUM>.

As a variant of Embodiment <NUM>, a color display screen is identical to the DES panel of Embodiment <NUM> except that no OC layer is disposed between gaps of color filters, as shown in <FIG>.

Claim 1:
A display electronic slurry, DES, panel, comprising a DES module, wherein the DES module comprises an upper substrate (<NUM>) and a lower substrate (<NUM>) opposite to the upper substrate (<NUM>), a DES cavity (<NUM>) is formed between the upper substrate (<NUM>) and the lower substrate (<NUM>), and the DES cavity (<NUM>) is filled with electronic slurry particles;
a filter layer (<NUM>) is disposed on a surface of the upper substrate (<NUM>) facing the lower substrate (<NUM>), and a pixel electrode layer (<NUM>) is disposed on a surface of the lower substrate (<NUM>) facing the upper substrate (<NUM>);
the DES cavity (<NUM>) is provided with a support structure (<NUM>), an indium tin oxide, ITO, film (<NUM>) is disposed between the support structure (<NUM>) and the filter layer (<NUM>), a lower surface of the ITO film (<NUM>) is in contact with an upper surface of the support structure (<NUM>), and a lower surface of the support structure (<NUM>) is in contact with an upper surface of the pixel electrode layer (<NUM>);
a surface of the filter layer (<NUM>) facing the pixel electrode layer (<NUM>) is provided with reflective layers (<NUM>) at intervals, the reflective layers (<NUM>) being located between the filter layer (<NUM>) and the ITO film (<NUM>) and the reflective layers (<NUM>) comprising a plurality of hemispherical reflective layer microstructures (<NUM>) disposed at intervals; and
the filter layer (<NUM>) comprises a plurality of color filters, characterized in that an optical coating layer (<NUM>) made of liquid silica or liquid polyimide is disposed between gaps of the color filters, and the filter layer (<NUM>) is attached to an upper surface of the ITO film (<NUM>) by using an optically clear adhesive layer (<NUM>)