A display component and its driving method

Abstract

This invention relates to the field of liquid crystal displays, and particularly to a display component and its driving method, comprising a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate, and a second color filter substrate stacked sequentially. A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate; a second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate; the first and second common electrode layers are connected to a first polarity terminal of the driving signal source; the surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes; the first pixel electrodes are connected to a second polarity terminal of the driving signal source; the driving signal source is an AC signal source; the second pixel electrodes are electrically connected to the first pixel electrodes at the same position via capacitive coupling. This invention significantly reduces the production cost of the display component and greatly simplifies the manufacturing process.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal displays, and in particular to a display component and its driving method. Background Technology

[0002] With the development of technology, the harm of traditional displays to human eyes is becoming increasingly undeniable. As a result, electronic paper is gaining popularity. Among electronic paper technologies, cholesteric liquid crystal electronic paper is attracting more and more attention due to its ultra-low power consumption. It consumes almost no power when displaying static images, and only needs energy when refreshing the screen. The images can be maintained for months or even years without power, and the display characteristics are not affected even when the power is off.

[0003] If cholesteric liquid crystals are to display black and white, it is impossible to achieve this using a single layer of liquid crystal. It is necessary to use cyan / red liquid crystals to mix and blend them. Existing related technologies usually achieve this by stacking two display modules (one cyan and one red). However, this means that after the two display modules are manufactured independently, they still need to be aligned pixel by pixel and bonded with optical adhesive. Two sets of corresponding driving hardware are also required to control the driving, resulting in a complex structure, high cost, and excessive space occupation.

[0004] Therefore, how to reduce the production cost of cholesteric liquid crystal display components, reduce process complexity and space occupation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a display component and its driving method to solve the problems of complex structure, high production cost and large space occupation of cholesteric liquid crystal display components in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides a display component, including a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate and a second color filter substrate stacked in sequence.

[0007] The first color filter substrate, the intermediate substrate, and the conductive sealant form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer; the second color filter substrate, the intermediate substrate, and the conductive sealant form a second liquid crystal cavity; the second liquid crystal cavity is filled with a second type of cholesteric liquid crystal layer;

[0008] A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate; a second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate; the first common electrode layer and the second common electrode layer are connected to the first polarity terminal of the driving signal source;

[0009] The surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes; the first pixel electrodes are connected to the second polarity terminal of the driving signal source;

[0010] The driving signal source is an AC signal source; the second pixel electrode is electrically connected to the first pixel electrode at the same position through capacitive coupling.

[0011] Optionally, in the display assembly, the thickness of the intermediate substrate does not exceed 0.12 mm.

[0012] Optionally, in the display component, the first type of cholesteric liquid crystal layer is a cyan liquid crystal layer, and the second type of cholesteric liquid crystal layer is a red liquid crystal layer;

[0013] The surface of the first color filter substrate is the light-facing surface of the display component, and the surface of the second color filter substrate away from the second type of cholesteric liquid crystal layer also includes a black light-absorbing layer.

[0014] Optionally, in the display component, the black light-absorbing layer is a black ink layer and / or black tape.

[0015] Optionally, in the display assembly, the driving signal source is bonded to the long side of the intermediate substrate.

[0016] Optionally, in the display component, both the first pixel electrode and the second pixel electrode are rounded electrode sheets with chamfered edges.

[0017] Optionally, in the display component, the display component is connected to an external circuit via a flexible circuit board.

[0018] Optionally, in the display assembly, the intermediate substrate is a TFT substrate.

[0019] Optionally, in the display assembly, a first dielectric inorganic film is further included between the intermediate substrate and the first pixel electrode;

[0020] A second dielectric inorganic film is also included between the intermediate substrate and the second pixel electrode;

[0021] The first dielectric inorganic film and / or the second dielectric inorganic film are at least one of hafnium dioxide film and aluminum oxide film.

[0022] A display component includes a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate, and a second color filter substrate stacked sequentially.

[0023] The first color filter substrate, the intermediate substrate, and the conductive sealant form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer; the second color filter substrate, the intermediate substrate, and the conductive sealant form a second liquid crystal cavity; the second liquid crystal cavity is filled with a second type of cholesteric liquid crystal layer;

[0024] A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate; a second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate; the first common electrode layer and the second common electrode layer are connected to the first polarity terminal of the driving signal source;

[0025] The surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes; the first pixel electrodes are connected to the second polarity terminal of the driving signal source;

[0026] The driving signal source is a DC signal source;

[0027] The intermediate substrate includes a through-hole that penetrates the intermediate substrate; the through-hole electrically connects the first pixel electrode and the second pixel electrode, which are located at the same position.

[0028] A driving method for a display component, the driving method for any of the above-described display components, comprising:

[0029] Receive frame image data;

[0030] The target display pixel is determined based on the frame image data, and the first pixel electrode corresponding to the target display pixel is taken as the first target pixel electrode, and the second pixel electrode corresponding to the target display pixel is taken as the second target pixel electrode.

[0031] The driving signal source outputs a high level, setting the first type of cholesteric liquid crystal layer and the second type of cholesteric liquid crystal layer to the H state;

[0032] The driving signal source outputs 0 volts to convert the first type of cholesteric liquid crystal layer and the second type of cholesteric liquid crystal layer from the H state to the P state;

[0033] The driving signal source applies a preset excitation voltage between the first target pixel electrode and the second target pixel electrode, causing the cholesteric liquid crystal layer corresponding to the first target pixel electrode and the second target pixel electrode to be converted to the FC state;

[0034] Discharge the first target pixel electrode and the second target pixel electrode to complete the display of the frame image.

[0035] Optionally, in the driving method of the display component, the driving signal source is an AC signal source;

[0036] Accordingly, discharging the first target pixel electrode and the second target pixel electrode includes:

[0037] The driving signal source gradually reduces the output voltage at intervals of the first voltage, releasing the voltage of the first target pixel electrode and the second target pixel electrode to 0, thus completing the discharge.

[0038] The display component provided by this invention includes a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate, and a second color filter substrate stacked sequentially. The first color filter substrate, the intermediate substrate, and the conductive frame adhesive form a first liquid crystal cavity. The first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer. The second color filter substrate, the intermediate substrate, and the conductive frame adhesive form a second liquid crystal cavity. The second liquid crystal cavity is filled with a second type of cholesteric liquid crystal layer. A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate. A second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate. The first common electrode layer and the second common electrode layer are connected to a first polarity terminal of the driving signal source. The surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes. The first pixel electrodes are connected to a second polarity terminal of the driving signal source. The driving signal source is an AC signal source. The second pixel electrodes are electrically connected to the first pixel electrodes at the same position via capacitive coupling.

[0039] This invention utilizes a three-layer substrate to form two liquid crystal chambers, significantly reducing the space occupied by the component. The first and second common-electrode layers, belonging to the two different liquid crystal chambers, are connected to the same end of the driving signal source. Similarly, the pixel electrodes on the intermediate substrate facing different liquid crystal chambers are connected to the same end of the driving signal source via capacitive coupling. This allows the two cholesteric liquid crystal layers in the first and second liquid crystal chambers to be controlled by the same set of driving signals, or a single set of driving hardware. Furthermore, the signal transmission via capacitive coupling avoids additional substrate processing operations such as drilling, greatly reducing the production cost of the display component. Structurally, it avoids pixel alignment and bonding between the two liquid crystal chambers, significantly reducing the manufacturing difficulty. This invention also provides a driving method for a display component with the aforementioned beneficial effects. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of a specific embodiment of the display component provided by the present invention;

[0042] Figure 2 A partial stacked exploded view of a specific embodiment of the display component provided by the present invention;

[0043] Figure 3 A partial stacked exploded view of a specific embodiment of the display component provided by the present invention;

[0044] Figure 4 A schematic diagram of the external structure of a specific embodiment of the display component provided by the present invention;

[0045] Figure 5 This is a schematic diagram of the structure of another display component;

[0046] Figure 6 This is a flowchart illustrating a specific embodiment of the driving method for the display component provided by the present invention.

[0047] Figure label:

[0048] 10-Conductive frame adhesive; 20-Drive signal source; 21-Common conductive layer; 30-First color filter substrate; 40-Intermediate substrate; 50-Second color filter substrate; 31-First common layer; 51-Second common layer; 41-First pixel electrode; 42-Second pixel electrode; 43-Conductive via; 61-First cholesteric liquid crystal layer; 62-Second cholesteric liquid crystal layer; 70-Black light-absorbing layer; 80-Flexible circuit board; 90-External circuit. Detailed Implementation

[0049] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] The core of this invention is to provide a display component, the structural schematic diagram of one specific embodiment of which is shown below. Figure 1As shown, it is referred to as Specific Embodiment 1, including conductive frame adhesive 10, driving signal source 20, and a first color filter substrate 30, an intermediate substrate 40 and a second color filter substrate 50 stacked in sequence.

[0051] The first color filter substrate 30, the intermediate substrate 40 and the conductive frame adhesive 10 form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer 61.

[0052] The second color filter substrate 50, the intermediate substrate 40 and the conductive frame adhesive 10 form a second liquid crystal chamber; the second liquid crystal chamber is filled with a second type of cholesteric liquid crystal layer 62.

[0053] A first common electrode layer 31 is disposed on the surface of the first color filter substrate 30 facing the intermediate substrate 40; a second common electrode layer 51 is disposed on the surface of the second color filter substrate 50 facing the intermediate substrate 40;

[0054] The first common-polarity layer 31 and the second common-polarity layer 51 are connected to the first polarity terminal of the driving signal source 20;

[0055] The surface of the intermediate substrate 40 facing the first color filter substrate 30 includes an array of first pixel electrodes 41, and the surface facing the second color filter substrate 50 includes an array of second pixel electrodes 42; the first pixel electrodes 41 are connected to the second polarity terminal of the driving signal source 20.

[0056] The driving signal source 20 is an AC signal source; the second pixel electrode 42 is electrically connected to the first pixel electrode 41, which is in the same position, through capacitive coupling.

[0057] This invention limits the driving signal source 20 to an AC signal source, meaning that the voltage applied to the upper and lower sides of each liquid crystal cavity is an AC voltage. (See reference...) Figure 1 The first pixel electrode 41 is directly electrically connected to the driving signal source 20, while the second pixel electrode 42 generates an induced potential through capacitive coupling and is electrically connected to the first pixel electrode 41 at the same position, thereby regulating the state of the cholesteric liquid crystal at the corresponding position. Figure 1 It also includes a common electrode conductive layer 21, which is used to connect the first common electrode layer 31 and the second common electrode layer 51.

[0058] It should be noted that "same position" in this specific embodiment refers to the same position within the extension plane of the intermediate substrate 40, which will not be elaborated further below. An exploded view of the stacked first color filter substrate 30, intermediate substrate 40, and second color filter substrate 50 in this invention can be found in [reference needed]. Figure 2 indivual Figure 3 , Figure 2 This is an exploded view of the stacked structure from a top-down perspective. Figure 3 This is an exploded view of the stacked components from a low angle. The structural diagram of the assembled display components is shown below. Figure 4 As shown.

[0059] In a preferred embodiment, both the first pixel electrode 41 and the second pixel electrode 42 are rounded electrode sheets with chamfered edges.

[0060] Chamfering the first pixel electrode 41 and the second pixel electrode 42 to obtain rounded-corner electrode sheets, that is, removing the sharp corners of the electrode sheets, can significantly suppress tip discharge of the electrode sheets, reduce edge leakage current at a lower cost, and fundamentally weaken the electric field concentration problem between the first pixel electrode 41 and the second pixel electrode 42, solve the edge electric field distortion, thereby further improving the coupling efficiency between capacitors and optimizing the electrical connection effect between the second pixel electrode 42 and the first pixel electrode 41.

[0061] Preferably, the intermediate substrate 40 is a TFT substrate, i.e., a thin-film transistor substrate, and its surface includes source traces, aSi-TFT transistor, gate traces, a first pixel electrode 41, and a second pixel electrode 42. The source traces are connected to the drain of the aSi-TFT transistor, the gate traces are connected to the gate of the aSi-TFT transistor, and the first pixel electrode 41 is connected to the source of the aSi-TFT transistor. The second pixel electrode is on the reverse side of the intermediate substrate 40 and has the same size and position as the first pixel electrode. The TFT substrate does not exhibit color bleeding or ghosting and has a fast response speed. Of course, other substrates can also be used as the intermediate substrate; this invention is not limited thereto. Furthermore, other types of substrates, such as passive matrix (PM-LCD) substrates, can be selected as the intermediate substrate 40 according to actual conditions; this invention is not limited thereto.

[0062] Furthermore, the thickness of the intermediate substrate 40 does not exceed 0.12 mm. The thickness of the intermediate substrate 40 is the optimal range after extensive theoretical calculations and actual tests. When the thickness does not exceed 0.12 mm, the electrical signal strength of the second pixel electrode 42 is the strongest during the capacitive coupling process, which can realize reliable control of the second type of cholesteric liquid crystal layer 62.

[0063] Furthermore, a first dielectric inorganic thin film is also included between the intermediate substrate and the first pixel electrode;

[0064] A second dielectric inorganic film is also included between the intermediate substrate and the second pixel electrode;

[0065] The first dielectric inorganic film and / or the second dielectric inorganic film are at least one of hafnium dioxide film and aluminum oxide film.

[0066] In this preferred embodiment, a first dielectric inorganic film and a second dielectric inorganic film are respectively added to the front and back surfaces of the intermediate substrate. The two dielectric inorganic films can be grown by ALD (atomic layer deposition) process, and the thickness can be controlled from tens of nanometers to hundreds of nanometers. The first dielectric inorganic film and the second dielectric inorganic film can greatly increase the capacitance value between the first pixel electrode 41 and the second pixel electrode 42 (usually 3 to 5 times) at a lower process cost (no pinholes, no scattering), and further improve the capacitive coupling effect.

[0067] In one specific embodiment, the first type of cholesteric liquid crystal layer 61 is a cyan liquid crystal layer, and the second type of cholesteric liquid crystal layer 62 is a red liquid crystal layer;

[0068] The surface of the first color filter substrate 30 is the light-facing surface of the display component, and the surface of the second color filter substrate 50 away from the second type cholesteric liquid crystal layer 62 also includes a black light-absorbing layer 70.

[0069] When the cyan liquid crystal layer and the red liquid crystal layer reflect light together, the corresponding pixel can display white. Of course, if neither liquid crystal layer reflects light, the light will pass through the two cholesteric liquid crystal layers and be absorbed by the black light-absorbing layer 70 below, so the corresponding pixel will appear black, thus realizing the black and white display of the pixel and greatly expanding the scope of application of the present invention.

[0070] Furthermore, the black light-absorbing layer 70 is a black ink layer and / or black tape. The black ink layer is more flexible in its design and can better adapt to various working environments, with good stability. The black tape is easy to install and can improve production efficiency. The corresponding black light-absorbing layer 70 can be selected according to actual needs, and this invention does not limit it.

[0071] Furthermore, the driving signal source 20 is bonded to the long side of the intermediate substrate 40. Bonding the driving signal source 20 to the long side of the intermediate substrate 40 effectively provides additional support for the intermediate substrate 40 along its long side, significantly enhancing its structural strength. Simultaneously, since the dimension of the driving signal source 20 along the extension direction of the long side of the intermediate substrate 40 is typically smaller than the length of the long side of the intermediate substrate 40, it further saves space, improves the installation compatibility of the display components, and reduces installation difficulty.

[0072] Furthermore, the drive signal source 20 is bonded to the middle of the long side in order to balance the stress at both ends of the intermediate substrate 40, further improving the working stability of the display component, while also reducing the installation difficulty of the display component.

[0073] In a preferred embodiment, the display component is connected to an external circuit 90 via a flexible circuit board 80. The flexible circuit board 80 allows for more flexible placement of the display component and can be mounted on the surface of various devices, greatly expanding the applicability of the invention.

[0074] The display component provided by the present invention includes a conductive sealant 10, a driving signal source 20, and a first color filter substrate 30, an intermediate substrate 40, and a second color filter substrate 50 stacked sequentially; the first color filter substrate 30, the intermediate substrate 40, and the conductive sealant 10 form a first liquid crystal chamber; the first liquid crystal chamber is filled with a first type of cholesteric liquid crystal layer 61; the second color filter substrate 50, the intermediate substrate 40, and the conductive sealant 10 form a second liquid crystal chamber; the second liquid crystal chamber is filled with a second type of cholesteric liquid crystal layer 62; a first common electrode layer 31 is disposed on the surface of the first color filter substrate 30 facing the intermediate substrate 40; the second color filter substrate 50, the intermediate substrate 40, and the conductive sealant 10 form a second liquid crystal chamber; the second liquid crystal chamber is filled with a second type of cholesteric liquid crystal layer 62; the first color filter substrate 30 has a first common electrode layer 31 disposed on the surface facing the intermediate substrate 40; the second color filter substrate 5 ... A second common electrode layer 51 is disposed on the surface of the second color filter substrate 50 facing the intermediate substrate 40; the first common electrode layer 31 and the second common electrode layer 51 are connected to the first polarity terminal of the driving signal source 20; the surface of the intermediate substrate 40 facing the first color filter substrate 30 includes an array of first pixel electrodes 41, and the surface facing the second color filter substrate 50 includes an array of second pixel electrodes 42; the first pixel electrodes 41 are connected to the second polarity terminal of the driving signal source 20; the driving signal source 20 is an AC signal source; the second pixel electrodes 42 are electrically connected to the first pixel electrodes 41 at the same position through capacitive coupling. In this invention, two liquid crystal chambers are formed by three-layer plates, which greatly reduces the space occupied by the component. The first common electrode layer 31 and the second common electrode layer 51, which belong to two different liquid crystal chambers, are connected to the same end of the driving signal source 20. The pixel electrodes on the intermediate substrate 40 facing different liquid crystal chambers are also connected to the same end of the driving signal source 20 through capacitive coupling. This enables the two cholesteric liquid crystal layers in the first liquid crystal chamber and the second liquid crystal chamber to be controlled by the same set of driving signals, or in other words, a set of driving hardware. At the same time, the signal transmission achieved by capacitive coupling avoids additional processing operations on the substrate, such as drilling, which greatly reduces the production cost of the display component. Structurally, it avoids pixel alignment and bonding between the two liquid crystal chambers, which greatly reduces the difficulty of the process.

[0075] The present invention also provides another specific embodiment, the corresponding structural schematic diagram of which is shown below. Figure 5 As shown, it is referred to as Specific Implementation Method 2, including conductive frame adhesive 10, driving signal source 20, and a first color filter substrate 30, an intermediate substrate 40 and a second color filter substrate 50 stacked in sequence.

[0076] The first color filter substrate 30, the intermediate substrate 40 and the conductive frame adhesive 10 form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer 61.

[0077] The second color filter substrate 50, the intermediate substrate 40 and the conductive frame adhesive 10 form a second liquid crystal chamber; the second liquid crystal chamber is filled with a second type of cholesteric liquid crystal layer 62.

[0078] A first common electrode layer 31 is disposed on the surface of the first color filter substrate 30 facing the intermediate substrate 40; a second common electrode layer 51 is disposed on the surface of the second color filter substrate 50 facing the intermediate substrate 40;

[0079] The first common-polarity layer 31 and the second common-polarity layer 51 are connected to the first polarity terminal of the driving signal source 20;

[0080] The surface of the intermediate substrate 40 facing the first color filter substrate 30 includes an array of first pixel electrodes 41, and the surface facing the second color filter substrate 50 includes an array of second pixel electrodes 42; the first pixel electrodes 41 are connected to the second polarity terminal of the driving signal source 20.

[0081] The drive signal source 20 is a DC signal source;

[0082] The intermediate substrate 40 includes a through-hole 43 that penetrates the intermediate substrate 40; the through-hole 43 electrically connects the first pixel electrode 41 and the second pixel electrode 42, which are located at the same position.

[0083] In this specific embodiment, the drive signal source 20 outputs DC power, which can be referred to as... Figure 5 The first pixel electrode 41 and the second pixel electrode 42 are directly connected through the through hole 43, so that the first pixel electrode 41 and the corresponding second pixel electrode 42 are at the same potential. However, it is obvious that drilling holes in the intermediate substrate 40 will take extra production time, reduce production efficiency and increase costs, and the final effect is almost the same as that of the present invention.

[0084] Furthermore, the through-hole 43 is an indium zinc oxide (IZO) through-hole. IZO has good conformability, can adapt to the ultra-high aspect ratio of the through-hole 43, and has excellent thermomechanical reliability. Therefore, using IZO here is more advantageous than other metal conductive materials. Of course, other materials can also be used, and adjustments can be made according to the actual situation. This invention does not limit the use of IZO.

[0085] The present invention also provides a driving method for a display component, the flowchart of one specific embodiment of which is shown below. Figure 6 As shown, referred to as Specific Implementation Method Two, the driving method for the display component is used for any of the above-described display components, including:

[0086] S101: Receive frame image data.

[0087] Specifically, the frame image data can include which pixels need to be displayed as white and which pixels need to be displayed as black.

[0088] S102: Determine the target display pixel based on the frame image data, and use the first pixel electrode 41 corresponding to the target display pixel as the first target pixel electrode, and the second pixel electrode 42 corresponding to the target display pixel as the second target pixel electrode.

[0089] As will be explained later, the target display pixel in this step is the item that needs to be displayed as black, that is, the pixel in which neither the first type of cholesteric liquid crystal layer 61 nor the second type of cholesteric liquid crystal layer 62 reflects light.

[0090] S103: The drive signal source 20 outputs a high level, setting the first type of cholesteric liquid crystal layer 61 and the second type of cholesteric liquid crystal layer 62 to the H state.

[0091] Taking the case where the driving signal source 20 is an AC signal source as an example, all gate signals of the display component output a high level (Xon function on), while the source signal (i.e., the second polarity terminal of the driving signal source 20) alternately outputs positive and negative voltages (Vp / Vn, typically ±15V). The first polarity terminal connected to the two common-electrode layers outputs Acvcom (Acvcom- / +, typically ±25V), with the polarity opposite to the source signal. At this time, the first pixel electrode of the display screen is sequentially charged with Vp / Vn, and the electrical signal can be transmitted to the second pixel electrode 42 through capacitive coupling. At this time, the first cholesteric liquid crystal layer 61 and the second cholesteric liquid crystal layer 62 enter the H state (the voltage difference between Vp / Vn and Acvcom- / + is high, which allows the liquid crystal to enter the H state).

[0092] S104: Drive signal source 20 outputs 0 volts to convert the first type of cholesteric liquid crystal layer 61 and the second type of cholesteric liquid crystal layer 62 from the H state to the P state.

[0093] Following the previous example, the source signal outputs 0V, and the first polarity terminal Acvcom also outputs 0V. At this time, the signals of both pixel electrodes are 0V, the electric fields of the first type of cholesteric liquid crystal layer 61 and the second type of cholesteric liquid crystal layer 62 return to 0V, and the two cholesteric liquid crystal layers enter the P state, displaying white (the cyan and red layers are both reflective layers, and the mixed colors produce white).

[0094] S105: The driving signal source 20 applies a preset excitation voltage between the first target pixel electrode and the second target pixel electrode, so that the cholesteric liquid crystal layer corresponding to the first target pixel electrode and the second target pixel electrode is converted to the FC state.

[0095] Following the previous example, the gate signal of the display component enters progressive scan mode (Xon function off), while the source signal alternately outputs positive and negative voltages (Vp / Vn), and the first polarity terminal output Acvcom always outputs 0V. At this time, the first target pixel electrode is sequentially charged with Vp / Vn, and the electrical signal is transmitted to the corresponding second target pixel electrode through capacitive coupling. At this time, the first cholesteric liquid crystal layer 61 and the second cholesteric liquid crystal layer 62 at the position corresponding to the target display pixel are subjected to the electric field generated by the Vp / Vn voltage, causing the liquid crystal to enter the FC state and display black (cyan / red is the focal conic transmission state, the light-absorbing layer of the display bottom layer, which is black).

[0096] S106: Discharge the first target pixel electrode and the second target pixel electrode to complete the display of the frame image.

[0097] Following the previous example, the voltage can be gradually reduced according to the preset timing (from n+1 to n+5 frames) (in 5V increments), and finally reduced to 0V, so that the liquid crystals of the first type cholesteric liquid crystal layer 61 and the second type cholesteric liquid crystal layer 62 remain in their current state.

[0098] The driving process when the driving signal source 20 is a DC signal source is similar to the example of the AC signal source above. The only difference is that the driving signal source 20 does not need to alternately output positive and negative voltages, and the final S106 step does not need to gradually reduce the voltage, but can directly reduce it to 0V.

[0099] In one specific implementation, the driving signal source 20 is an AC signal source;

[0100] Accordingly, discharging the first target pixel electrode and the second target pixel electrode includes:

[0101] The driving signal source 20 gradually reduces the output voltage at intervals of the first voltage, releasing the voltage of the first target pixel electrode and the second target pixel electrode to 0, thus completing the discharge.

[0102] Since the driving signal source selected in this invention is an AC power supply, and the first pixel electrode 41 and the second pixel electrode 42 are capacitively coupled, directly reducing the voltage to 0 volts may result in residual charge on the second pixel electrode 42, leading to liquid crystal control failure. In this preferred embodiment, by gradually reducing the voltage, both rapid voltage release and operational effectiveness are ensured, charge residue is avoided, and the operational stability of the display component is improved. Preferably, the first voltage is 5 volts.

[0103] The driving method for the display component provided in this specific embodiment is in contrast to the display component described above. For specific technical details, please refer to the previous text, which will not be repeated here.

[0104] The driving method for a display component provided by this invention is used in any of the aforementioned display components. The method involves receiving frame image data; determining a target display pixel based on the frame image data, and designating a first pixel electrode 41 corresponding to the target display pixel as a first target pixel electrode and a second pixel electrode 42 corresponding to the target display pixel as a second target pixel electrode; a driving signal source 20 outputting a high level to set the first cholesteric liquid crystal layer 61 and the second cholesteric liquid crystal layer 62 to the H state; a driving signal source 20 outputting 0 volts to convert the first cholesteric liquid crystal layer 61 and the second cholesteric liquid crystal layer 62 from the H state to the P state; a driving signal source 20 applying a preset excitation voltage between the first target pixel electrode and the second target pixel electrode to convert the cholesteric liquid crystal layer corresponding to the first target pixel electrode and the second target pixel electrode to the FC state; and discharging the first target pixel electrode and the second target pixel electrode to complete the display of the frame image. This invention utilizes a three-layer substrate to form two liquid crystal chambers, significantly reducing the space occupied by the component. The first common electrode layer 31 and the second common electrode layer 51, belonging to the two different liquid crystal chambers, are connected to the same end of the driving signal source 20. Similarly, the pixel electrodes on the intermediate substrate 40 facing different liquid crystal chambers are connected to the same end of the driving signal source 20 via capacitive coupling. This allows the two cholesteric liquid crystal layers in the first and second liquid crystal chambers to be controlled by the same set of driving signals, or in other words, a single set of driving hardware. Furthermore, the signal transmission via capacitive coupling avoids additional substrate processing operations such as drilling, greatly reducing the production cost of the display component. Structurally, it avoids pixel alignment and bonding between the two liquid crystal chambers, significantly reducing the manufacturing difficulty. This invention also provides a driving method for a display component with the aforementioned beneficial effects.

[0105] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0106] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0107] The display component and its driving method provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A display component, characterized in that, It includes a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate, and a second color filter substrate stacked in sequence. The first color filter substrate, the intermediate substrate, and the conductive sealant form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer; the second color filter substrate, the intermediate substrate, and the conductive sealant form a second liquid crystal cavity; the second liquid crystal cavity is filled with a second type of cholesteric liquid crystal layer; A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate; a second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate; the first common electrode layer and the second common electrode layer are connected to the first polarity terminal of the driving signal source; The surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes. The first pixel electrode is connected to the second polarity terminal of the driving signal source; The driving signal source is an AC signal source; The second pixel electrode is electrically connected to the first pixel electrode, which is located at the same position, via capacitive coupling.

2. The display component as claimed in claim 1, characterized in that, The thickness of the intermediate substrate does not exceed 0.12 mm.

3. The display component as described in claim 1, characterized in that, The first type of cholesteric liquid crystal layer is a cyan liquid crystal layer, and the second type of cholesteric liquid crystal layer is a red liquid crystal layer; The surface of the first color filter substrate is the light-facing surface of the display component, and the surface of the second color filter substrate away from the second type of cholesteric liquid crystal layer also includes a black light-absorbing layer.

4. The display component as claimed in claim 3, characterized in that, The black light-absorbing layer is a black ink layer and / or black tape.

5. The display component as claimed in claim 1, characterized in that, The driving signal source is bonded to the long side of the intermediate substrate.

6. The display component as claimed in claim 1, characterized in that, Both the first pixel electrode and the second pixel electrode are rounded electrode sheets with chamfered edges.

7. The display component as claimed in claim 1, characterized in that, The display component is connected to an external circuit via a flexible circuit board.

8. The display component as claimed in claim 1, characterized in that, The intermediate substrate is a TFT substrate.

9. The display component as claimed in claim 1, characterized in that, A first dielectric inorganic film is also included between the intermediate substrate and the first pixel electrode; A second dielectric inorganic film is also included between the intermediate substrate and the second pixel electrode; The first dielectric inorganic film and / or the second dielectric inorganic film are at least one of hafnium dioxide film and aluminum oxide film.

10. A display component, characterized in that, It includes a conductive frame adhesive, a driving signal source, and a first color filter substrate, an intermediate substrate, and a second color filter substrate stacked in sequence. The first color filter substrate, the intermediate substrate, and the conductive sealant form a first liquid crystal cavity; the first liquid crystal cavity is filled with a first type of cholesteric liquid crystal layer; the second color filter substrate, the intermediate substrate, and the conductive sealant form a second liquid crystal cavity; the second liquid crystal cavity is filled with a second type of cholesteric liquid crystal layer; A first common electrode layer is disposed on the surface of the first color filter substrate facing the intermediate substrate; a second common electrode layer is disposed on the surface of the second color filter substrate facing the intermediate substrate; the first common electrode layer and the second common electrode layer are connected to the first polarity terminal of the driving signal source; The surface of the intermediate substrate facing the first color filter substrate includes an array of first pixel electrodes, and the surface facing the second color filter substrate includes an array of second pixel electrodes. The first pixel electrode is connected to the second polarity terminal of the driving signal source; The driving signal source is a DC signal source; The intermediate substrate includes a through-hole that penetrates the intermediate substrate; the through-hole electrically connects the first pixel electrode and the second pixel electrode, which are located at the same position.

11. A driving method for a display component, characterized in that, The driving method for the display component is used for the display component as described in any one of claims 1 to 10, comprising: Receive frame image data; The target display pixel is determined based on the frame image data, and the first pixel electrode corresponding to the target display pixel is taken as the first target pixel electrode, and the second pixel electrode corresponding to the target display pixel is taken as the second target pixel electrode. The driving signal source outputs a high level, setting the first type of cholesteric liquid crystal layer and the second type of cholesteric liquid crystal layer to the H state; The driving signal source outputs 0 volts to convert the first type of cholesteric liquid crystal layer and the second type of cholesteric liquid crystal layer from the H state to the P state; The driving signal source applies a preset excitation voltage between the first target pixel electrode and the second target pixel electrode, causing the cholesteric liquid crystal layer corresponding to the first target pixel electrode and the second target pixel electrode to be converted to the FC state; Discharge the first target pixel electrode and the second target pixel electrode to complete the display of the frame image.

12. The driving method for a display component as described in claim 11, characterized in that, The driving signal source is an AC signal source; Accordingly, discharging the first target pixel electrode and the second target pixel electrode includes: The driving signal source gradually reduces the output voltage at intervals of the first voltage, releasing the voltage of the first target pixel electrode and the second target pixel electrode to 0, thus completing the discharge.

Images