TW201113587A - Continuous domain vertical alignment liquid crystal display panel - Google Patents

Abstract

This invention provides a Continuea-Domain Vertical Alignment (CDVA) Liquid Crystal display Panel, which comprises a first substrate and a second substrate. The first substrate include a first electrode and a plurality of protrusions that are disposed on the first substrate, the second substrate was opposing the first substrate, which include a second electrode that with patterned slits. Each protrusion was neighbored with at least one slit and designed as one is a straight line and the other is a sine-wave type curve line to keep the transmittance and raise the contrast ratio of the panel, mean while it also could prevent the color washout.

Description

201113587 VI. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display panel, and particularly to a continuous domain vertical Alignment Liquid Crystal display panel (Continuous Domain Vertical Alignment Liquid Crystal)

Display Pane CDVA LCD Panel). [Prior Art] The display of the daily application of the lake, which has no radiation, light weight and low power consumption, makes it widely available.

Information, communication and consumer electronics, in which the main component of the display is the liquid crystal display panel. In general, a liquid crystal display panel generally includes a two-phase till and a surface of a liquid crystal single-two glass substrate disposed between two glass substrates. When an external voltage is applied, the liquid crystal is not formed between the electrodes. The panel is applied to control the progress of the light; = the liquid crystal molecules are twisted, the tilt of the liquid crystal molecules is f = the purpose, but 'due to the different effects, the day;: = J = and gravity, etc.:: With the defects of crystal display two-type vertical alignment type, the industry proposes to refer to Fig. 1, the schematic diagram of the structure of the county, which is only represented by the medium-halogen region of the alignment type liquid crystal display panel 1, which is straight display The first substrate 11 and the two-base straight display panel 1 of the panel i include a first substrate π with a first liquid crystal cell 13. ϊ !jt ^ ^^ ^ - ^ rm, j-one electrode 121, the second electric-electronic substrate 12 has a slit 122 'the positions of the two 32-segmentally arranged squat shirts of the convex bodies m are respectively located Adjacent - 201113587 Between the slits 122, the liquid crystal unit 13 is sandwiched between the first and second substrates 11, and the first and second electrodes 111, 121 and the convex bodies 112 妒is# /, n ^ number is driven by the electric power generated by the first and second electrodes 111, 121; and the liquid crystal molecules 131 having a negative zeta constant.

Looking at the figure *1 'When the first electrode 111 of the first substrate 11 and the second electrode 121 of the ία: '#12 are not applied with a voltage, the liquid crystal cell is adjacent to the convex body 112 and the slits The liquid crystal molecules 131 and 122 of the liquid crystal molecules are slightly inclined toward the convex bodies 112; at this time, light passes along the second substrate 12 toward the first substrate η, and the celestial molecules 131 When transmitting in the long axis direction, the light cannot penetrate the first substrate η because the polarization state of the light is not changed, so that the vertical alignment type liquid crystal display panel 1 exhibits a dark state. Referring to FIG. 2', when a voltage is applied to the first electrode 111 of the first substrate 11 and the second electrode 121 of the second substrate 12+, a vertical is generated between the first substrate 11 and the first substrate 12. The first substrate 1; 1 and the first substrate 12 sandwich an electric field of a plane of the liquid crystal cell, and an electric field direction adjacent to an edge of the slits 122 is an arc, so that the liquid crystal molecules 131 are directed to the electric field. The direction is reversed, and each liquid crystal molecule ι31 is inclined along the convex body 112 by the adjacent convex body 112. At this time, the direction of light transmitted to the first substrate 11 after passing through the second substrate 12 and the liquid crystal molecules 131 The long axis direction is at a predetermined angle, so that the light changes the polarization state of the light when passing through the liquid crystal molecules 131 to coincide with the polarization direction of the first substrate 11, so that part of the light component penetrates the first substrate 11 The external alignment type liquid crystal display panel 1 is made to be in a bright state. Referring to FIG. 3, FIG. 3 is a top plan view of a pixel region of the vertical alignment type liquid crystal display panel 1. The opposite ends of each convex body 112 are linearly extended, so that liquid crystals are located on both sides of each convex body 112. When the molecules 131 are driven by the electric field, they are respectively inclined toward the convex body 112 to form two different directions of orientation, and at the same time, the angle of each of the convex bodies 112 is inverted triangle, so that the liquid crystal molecules 131 can only be The orientation of the four different directions of 201113587 (ie, four directions of X1, X2, χ3, and χ4) is displayed as shown in the figure. This can reduce the phenomenon that users will have different display effects when viewed along different angles. However, the liquid crystal molecules 131 can be oriented in substantially only four different directions. Since the refractive indices of the long axis and the short axis of the liquid crystal molecules 131 are different, the user feels different when viewing the face in different directions. The optical path is poor and a color shift occurs. In addition, when the vertical alignment type liquid crystal display panel 1 exhibits a dark state, the liquid crystal molecules 131 are substantially perpendicular to the plane of the liquid crystal cell 13 sandwiched between the first substrate u and the second substrate 2, but Equal convex

The action of the liquid crystal molecules 131 is slightly inclined toward the convex bodies 112, so that the polarization state of the light is changed by the refraction when passing through the liquid crystal molecules 131, which is consistent with the polarization direction of the first substrate 11, so that Part of the light penetrates the first portion, and the plate 11 is emitted outward, causing light leakage of the vertical alignment type liquid crystal display panel 1 in a dark state, resulting in poor contrast of the liquid crystal display panel. Therefore, how to design the convex body 112 and the slit 122 to improve the color shift phenomenon of the liquid crystal display and reduce the poor contrast caused by the dark state light leakage of the liquid crystal display panel is still to be developed and studied by the industry. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a continuous-domain vertical alignment type liquid crystal display panel which is highly contrast-producing and effectively solves the problem of color shift. Thus, the present invention provides a continuous domain vertical alignment type liquid + comprising a --substrate and a second substrate. i liquid helium display panel' The first substrate has a -electrode, and a plurality of protrusions formed on the sum and spaced apart and substantially elongated. ' - a direction of the package is spaced from the first substrate, and has a second electrode per slit; from this direction, the sine wave type is curved, (4) the sine wave and - through the sine wave 乂 2 5 201113587 f angle and For a straight line type of baseline, the angle at the G degree angle is no more than 25 degrees. The effect of the invention is that: by bending the convex body and the slit in the design pattern, the liquid crystal molecules exhibit multi-τ non-directional pointing along the sine wave, which can greatly reduce the phenomenon of dark state light leakage. The light is made smaller when passing through a plurality of directed liquid crystal molecules, thereby effectively improving the color shift phenomenon of the liquid crystal display panel. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention are clearly described in the following detailed description of the two preferred embodiments of the σ reference drawing.在 4 Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. Referring to FIG. 4 and FIG. 5, a first preferred embodiment of a continuous-domain vertical alignment type liquid crystal non-panel 2 includes a first substrate 3, a second color plate 4', and a liquid crystal cell 5, FIG. 5 is a schematic structural view of the second embodiment of the present invention, wherein only one of the pixel regions of the continuous alignment vertical alignment type liquid crystal display surface 2 is shown, wherein FIG. 4 is the continuous vertical alignment type liquid crystal display panel. 2 is a schematic plan view of one of the halogen regions, and 5 is a schematic cross-sectional view of FIG. ΰ Referring to FIG. 6 , the first substrate 3 has a first electrode &, a plurality of spaced apart and substantially elongated protrusions 32, each of which has a surface width of 10/m, and A sinusoidal type of bending, the sine wave fish - virtual through the sine wave twist and 18 degrees angle 'and the angle of the straight line 200' at 0 degrees (ie ^^ angle shown in the figure ^ For the production of the crucible, as shown in Fig. 6, in the present embodiment, each convex body 32 can be transformed from the positive wave type to the curved end portion in the vicinity of the pixel region except for the portion which is curved according to a positive X pattern. The straight line that turns into the other direction, the straight is a kind of Protrusion wing design, the flank can provide liquid crystal at the end of the pixel around the pixel can have a clear liquid crystal pointing to 201113587 to avoid pointing due to liquid crystal The dark region phenomenon is clarified, and the liquid crystal panel transmittance is reduced. The second substrate 4 is spaced apart from the first substrate in a direction, and has a second electrode 41 including a plurality of spaced-apart slits 411. The slits 411 are extended in a straight line pattern, and each slit 41 The cross-sectional width of 1 is 10//m'. From this direction, each convex body 32 is adjacent to at least one slit 411. In this embodiment, the orthographic projection positions of each convex body 32 are respectively adjacent to each other. Between the two slits 411.

The liquid crystal cell 5 is interposed between the first and second substrates 3 and 4, and is in contact with the first and second electrodes 31 and 41 and the protrusions 32, and has a plurality of first and second electrodes 31, 41 is a liquid crystal molecule 51 driven by an electric field generated by a combination and having a negative dielectric constant. When the first electrode 31 of the first substrate 3 and the second electrode 41 of the second substrate 4 are not applied with a voltage, the liquid crystal cell 5 is partially adjacent to the convex bodies.

The liquid crystal molecules 51 of the 32 and the slits 411 are slightly inclined toward the convex bodies 32 by the action of the convex bodies 32. At the same time, the shape of the convex body 32 is arranged in a sinusoidal waveform and has various directions. At this time, when the light passes through the second substrate 4 and is transported along the long axis direction of the liquid crystal molecules 51 toward the first substrate 3, The polarization state of the light is not changed to be inconsistent with the polarization direction of the first substrate 3, and the light cannot penetrate the first substrate 3, so that the continuous-domain vertical alignment type liquid crystal display panel 2 exhibits a dark state. When a voltage is applied to the first electrode 31 of the first substrate 3 and the second electrode 41 of the second substrate 4, an electric field is generated on the first substrate 3 and the second substrate. The liquid crystal molecules 51 are all turned toward the vertical electric field, and the liquid crystal molecules 51 adjacent to the convex bodies 32 are respectively inclined along the adjacent convex bodies 32 under the convex bodies and along the convex body 32 shape. The waveforms are arranged in a plurality of directions. At this time, the direction of the light transmitted to the first substrate 3 after passing through the first substrate is at a predetermined angle with the length of the liquid crystal molecules 51, so that the light is polarized when passing through the liquid crystal molecules 51. The state is consistent with the polarization direction of the first substrate 3, and 201113587 causes a portion of the light component to be emitted outward through the first substrate 3, so that the continuous-domain vertical alignment type liquid crystal display panel 2 exhibits a bright state.

By designing the convex bodies 32 to be curved according to a sinusoidal pattern, and designing the slits 411 to be in a linear extended state, on the one hand, no voltage is applied to the continuous-domain vertical alignment liquid crystal. When the panel 2 is displayed, the liquid crystal molecules 51 are arranged in a sinusoidal waveform with a pretilt angle in a plurality of directions by the cooperation of the protrusions 32 and the slits 411, so that the continuous-domain vertical alignment type liquid crystal display panel When the dark state is present, the liquid crystal molecules 51 can be greatly reduced by the action of the convex bodies 32, and the pretilt angles of only a few directions are generated toward the convex bodies 32, causing partial light to pass through the liquid crystal molecules 51. The present invention utilizes the convex bodies 32 and the slits 411 in a sine wave pattern and a straight line type by refracting the polarization state to match the polarization direction of the first substrate 3 and causing the light to be emitted outward. Cooperating, the liquid crystal molecules 51 have pretilt angles in various directions, so that even if several pretilt angles cause light leakage, most other pretilt directions can prevent light leakage, and thus The continuous region vertically aligns the contrast of the display panel 2; on the other hand, when a voltage is applied to the continuous-aligning liquid crystal display panel 2, the convex body 32 and the Ϊ ^ ΐ 11 11 are used to make the The liquid crystal points + 51 M along the sine wave type Ξ 拄 拄 拄 拄 拄 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕The results of the actual simulation test show that when the per-convex body 32 of the present invention is corresponding to the base, the angle of the skin at 0 degrees is from 12 degrees to 25 degrees. The change is 4215' penetration rate is 98.77%, 'thus, in the consideration of maintaining the penetration rate, it is worth mentioning that the angle of each angle is 15 degrees. The cross-sectional tail of the female protrusion 32 is between 8 and 12 201113587 /zm, and the cross-sectional width of each slit 411 is between 8 and 12 // m, and the effect of the present invention can be fully achieved. Angle of angle (4) 0 12 15.0 19.0 25.0 Tr% 100 98.77 97.54 93.08 82.68 Contrast 4043 4215 4295 4209 4299 Table 1 In addition, it is worth noting that each of the protrusions 32 of the present invention is satisfied with an adjacent slit 411: The slit 411 is extended in a straight line pattern. The convex body 32 is curved according to a sine wave pattern, and the sine wave is at a 0-degree and 180-degree angle through the sine wave and is a linear type of baseline, at an angle of 0 degrees. It is necessary to have a requirement of not more than 25 degrees, and thus, the effect of the present invention can be achieved regardless of whether or not the orthographic projection position of each convex body 32 is completely positioned between the adjacent two slits 411. Referring to FIG. 7, a second preferred embodiment of a continuous-domain vertical alignment type liquid crystal display panel 2 of the present invention is substantially the same as the first preferred embodiment. The difference is that the protrusions 32 are in a straight line type. Extending, and the slits 411 are curved according to a sine wave pattern, and the angle between the sine wave and the baseline Φ of the virtual φ passing through the sine wave twist and the angle of 180 degrees and being a straight line is 15 at the twist angle. The rest of the structure is the same as that of the first preferred embodiment, and details are not described herein again. By designing the convex bodies 32 and the slits 411, the liquid crystal molecules 51 can be arranged in a sinusoidal waveform with a pretilt angle in various directions to achieve the first preferred embodiment. The effect of reducing dark state light leakage to increase contrast and improve color shift problem. In summary, the embodiment of the present invention provides a new continuous-domain vertical 酉=-type liquid crystal display panel 2, by forming a convex body 32 and a slit 411 on the first substrate 3 and the second substrate 4, and The convex body 32 and the slit 411 are respectively designed to be sinusoidal type curved and linear type extending, so that the liquid 201113587 crystal molecules 51 are arranged along a sinusoidal waveform and have pretilt angles in various directions, which can be perpendicular to the continuous field. When the alignment type liquid crystal display panel 2 exhibits a dark state, the probability of light leakage due to the outward polarization of the light by the refraction of the liquid crystal molecules 51 is reduced, thereby improving the contrast of the continuous-domain vertical alignment type liquid crystal display panel 2, and also making the light When the liquid crystal molecules 51 pass through the liquid crystal molecules 51, the optical path difference is small, and the color shift problem of the vertical alignment type liquid crystal display panel can be effectively improved, so that the object of the present invention can be achieved. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change and modification according to the scope of the present invention and the description of the invention. All of them are still covered by the patents of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view for explaining the state of liquid crystal molecules when an electric field is not applied to a vertical alignment type liquid crystal display panel of the prior art; FIG. 2 is a partial cross-sectional view for explaining the prior art. The state of the liquid crystal molecules when an electric field is applied to the vertical alignment type liquid crystal display panel; FIG. 3 is a top view schematically illustrating the liquid crystal molecules arranged in four directions in the vertical alignment type liquid crystal display panel of the prior art, and FIG. 4 is a top view showing the present invention. In a first preferred embodiment of the invention, the liquid crystal molecules are arranged in a sinusoidal shape with a multi-directional pretilt angle; FIG. 5 is a partial cross-sectional view, The structure of the first preferred embodiment of the continuous-domain vertical alignment type liquid crystal display panel of the present invention is illustrated. FIG. 6 is a schematic view showing the convex body of the first preferred embodiment of the continuous-domain vertical alignment type liquid crystal display panel of the present invention. Curved along the sinusoidal waveform along the baseline, and defines the intersection of the tangent to the intersection of the baseline and the baseline as α; and Figure 7 is a Schematic diagram illustrating the present invention is a continuous domain vertical alignment type liquid crystal display panel of a second preferred embodiment, the liquid crystal molecules along a sinusoidal type having a slit in a multidirectional manner pretilt angle arrangement. 201113587 [Description of main component symbols] 2 Continuous-domain vertical alignment type liquid crystal display panel 200 Baseline 3 First substrate 31 First electrode 32 Projection 4 Second substrate 41 Second electrode • 411 slit 5 Liquid crystal cell 51 Liquid crystal molecule

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Claims (1)

201113587 VII. Patent application scope: 1. A continuous domain vertical alignment type liquid crystal display panel, comprising: having two views, at least one of the convex bodies and at least one: ° one of the convex slits is extended according to the straight line: Then, according to a sine wave type, the sine is 2. The continuous vertical alignment type liquid crystal protrusion is sinusoidal: the type of seam is extended according to the straight type, and the 3·=!2 special = circumference Between the continuous domain vertical alignment type liquid crystals described in the section. The baseline corresponding to the 〃 and the mother convex is equal to the distance between the adjacent two n:: special m(b)j continuous domains of the vertical alignment type liquid crystal. - the baseline of the singularity and the adjacent two slits 5. Between the two slits of the vertical alignment type liquid crystal of each of the continuous domains of the first". The orthographic projection positions of the convex bodies are respectively located adjacent to each other. 6. According to the third application panel of the patent application scope, the angle between the angles is g = f alignment type liquid crystal. Pingyi Jiaganwei is at 10 degrees to 20 degrees 7:= every mouth of the continuous vertical alignment type liquid crystal / / m, and each slit -" ^ degree is in the 12 12 3. 201113587 display The panel, wherein the protrusions extend in a straight line pattern, and the slits are curved in a sine wave pattern. 13